Frost Dates and Planting Windows in Oregon
The 32°F frost dates at the 172 weather stations in Oregon with NOAA's 1991–2020 Climate Normals, and the planting windows they give. These are long-term statistics, not a forecast. For the dates at the station nearest you, enter your ZIP code.
Frost dates across Oregon
Each risk level uses a date with a set chance of frost. In spring, it's the chance of a 32°F frost on or after the last-frost date. In fall, it's the chance of the first 32°F frost on or before the first-frost date. At the Typical level (30%), the last frost ranges from February 22 to June 21 across the state, and the first frost from August 30 to December 12.
At 21 of these 172 stations, 32°F isn't reached every year. Their frost dates describe only the years when it is reached, and the ranges on this page include them.
| Risk level | Earliest last frost | Latest last frost | Earliest first frost | Latest first frost |
|---|---|---|---|---|
| Conservative (10%) | March 5NATURE PARK-BEAVERTON, OR US | July 8ENTERPRISE 20 NNE, OR US | August 16ENTERPRISE 20 NNE, OR US | November 26BROOKINGS, OR US |
| Typical (30%) | February 22NATURE PARK-BEAVERTON, OR US | June 21O O RCH, OR US | August 30ENTERPRISE 20 NNE, OR US | December 12BROOKINGS 2 SE, OR US |
| Aggressive (50%) | January 312 stations | June 115 stations | September 52 stations | December 272 stations |
Growing season length
The growing season is the stretch between the last spring frost and the first fall frost at 32°F. NOAA gives it as a length with a chance of being at least that long. Each risk level uses the length with that chance of a shorter season, so Conservative shows the shortest lengths.
| Risk level | Shortest | Longest |
|---|---|---|
| Conservative (90% chance of at least this long) | 56 daysENTERPRISE 20 NNE, OR US | 291 daysBROOKINGS, OR US |
| Typical (70% chance of at least this long) | 72 daysENTERPRISE 20 NNE, OR US | 325 daysBROOKINGS, OR US |
| Aggressive (50% chance of at least this long) | 84 daysENTERPRISE 20 NNE, OR US | 349 daysBROOKINGS, OR US |
| Growing season | Stations |
|---|---|
| 60–79 days | 7 |
| 80–99 days | 17 |
| 100–119 days | 11 |
| 120–139 days | 23 |
| 140–159 days | 14 |
| 160–179 days | 23 |
| 180–199 days | 20 |
| 200–219 days | 20 |
| 220–239 days | 20 |
| 240–259 days | 7 |
| 260–279 days | 3 |
| 280–299 days | 5 |
| 300–319 days | 1 |
| 320–339 days | 1 |
Planting windows across Oregon
For each crop, the earliest start and the latest end of its Typical windows among the stations. A window at any one station is shorter and falls inside this span. Transplant dates are for seedlings. A fall window is left out at stations where it would start on or before the last day of the spring window, so some rows cover fewer stations.
| Crop and task | Earliest start | Latest end | Stations |
|---|---|---|---|
| Basil: Transplant outdoors | March 7 | July 5 | 172 of 172 |
| Bean: Sow outdoors | February 22 | June 21 | 172 of 172 |
| Beet: Sow outdoors | January 25 | June 21 | 172 of 172 |
| Beet: Sow for fall | June 15 | October 23 | 160 of 172 |
| Broccoli: Transplant outdoors | January 25 | June 7 | 172 of 172 |
| Broccoli: Transplant for fall | June 5 | October 23 | 163 of 172 |
| Brussels sprouts: Transplant outdoors | January 25 | June 7 | 172 of 172 |
| Brussels sprouts: Transplant for fall | May 23 | November 2 | 141 of 172 |
| Cabbage: Transplant outdoors | January 25 | June 7 | 172 of 172 |
| Cabbage: Transplant for fall | June 1 | October 23 | 158 of 172 |
| Cantaloupe: Transplant outdoors | March 7 | July 5 | 172 of 172 |
| Cantaloupe: Sow outdoors | March 7 | July 5 | 172 of 172 |
| Carrot: Sow outdoors | January 25 | June 21 | 172 of 172 |
| Carrot: Sow for fall | June 7 | October 13 | 148 of 172 |
| Cucumber: Transplant outdoors | March 1 | June 28 | 172 of 172 |
| Cucumber: Sow outdoors | February 22 | June 21 | 172 of 172 |
| Eggplant: Transplant outdoors | March 7 | July 5 | 172 of 172 |
| Garlic: Plant for fall | August 30 | December 26 | 172 of 172 |
| Lettuce: Transplant outdoors | January 25 | June 7 | 172 of 172 |
| Lettuce: Sow outdoors | January 25 | June 7 | 172 of 172 |
| Lettuce: Sow for fall | June 5 | November 2 | 163 of 172 |
| Onion: Transplant or plant sets | January 25 | June 7 | 172 of 172 |
| Peas: Sow outdoors | January 25 | June 7 | 172 of 172 |
| Peas: Sow for fall | June 7 | October 23 | 170 of 172 |
| Pepper: Transplant outdoors | March 7 | July 5 | 172 of 172 |
| Potato: Plant seed potatoes | January 25 | June 21 | 172 of 172 |
| Pumpkin: Sow outdoors | March 7 | July 5 | 172 of 172 |
| Radish: Sow outdoors | January 25 | June 7 | 172 of 172 |
| Radish: Sow for fall | July 12 | November 22 | 172 of 172 |
| Spinach: Transplant outdoors | January 25 | June 7 | 172 of 172 |
| Spinach: Sow outdoors | January 25 | June 7 | 172 of 172 |
| Spinach: Sow for fall | June 17 | November 5 | 172 of 172 |
| Summer squash: Transplant outdoors | March 1 | June 28 | 172 of 172 |
| Summer squash: Sow outdoors | February 22 | June 21 | 172 of 172 |
| Sweet corn: Sow outdoors | February 22 | June 21 | 172 of 172 |
| Sweet potato: Plant slips | March 1 | July 5 | 172 of 172 |
| Tomato: Transplant outdoors | March 7 | July 5 | 172 of 172 |
| Turnip: Sow outdoors | January 25 | June 7 | 172 of 172 |
| Turnip: Sow for fall | June 17 | November 2 | 172 of 172 |
| Watermelon: Transplant outdoors | March 7 | July 5 | 172 of 172 |
| Watermelon: Sow outdoors | March 7 | July 5 | 172 of 172 |
Weather stations in Oregon
Every station in Oregon with NOAA frost-date normals, with its Typical 32°F frost dates and growing season. 18 of them have no 32°F frost dates.
| Station | Elevation | Last frost | First frost | Growing season |
|---|---|---|---|---|
| ALKALI LAKE, OR US | 4,330 ft | June 18 | September 9 | 85 days |
| ALSEA FH (FALL CREEK), OR US | 230 ft | April 23 | October 24 | 189 days |
| ANTELOPE 6 SSW, OR US | 3,030 ft | May 30 | September 28 | 121 days |
| ARLINGTON, OR US | 280 ft | April 16 | October 15 | 187 days |
| ASHLAND, OR US | 1,730 ft | May 14 | October 1 | 143 days |
| ASTORIA RGNL AP, OR US | 10 ft | April 3 | November 2 | 218 days |
| AURORA STATE AP, OR US | 200 ft | March 25 | November 5 | 230 days |
| AUSTIN 3 S, OR US | 4,210 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| BAKER CITY MUNI AP, OR US | 3,360 ft | June 4 | September 9 | 100 days |
| BANDON 2 NNE, OR US32°F is reached in 99.8% of years here. Its frost dates describe only those years. | 20 ft | March 25 | November 14 | 242 days |
| BARNES STN, OR US | 3,970 ft | June 12 | September 9 | 93 days |
| BEAVERTON 2 SSW, OR US | 270 ft | April 11 | October 29 | 208 days |
| BELKNAP SPRINGS 8 N, OR US | 2,150 ft | May 13 | October 4 | 149 days |
| BEND 7 NE, OR US | 3,360 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| BEND, OR US | 3,660 ft | June 14 | September 12 | 96 days |
| BLY 4 SE, OR US | 4,560 ft | June 15 | September 10 | 91 days |
| BOARDMAN, OR US | 280 ft | April 23 | October 14 | 179 days |
| BONNEVILLE DAM, OR US | 60 ft | March 24 | November 18 | 245 days |
| BROOKINGS 2 SE, OR US32°F is reached in 79.9% of years here. Its frost dates describe only those years. | 50 ft | February 25 | December 12 | 306 days |
| BROOKINGS, OR US32°F is reached in 60.9% of years here. Its frost dates describe only those years. | 80 ft | February 23 | December 10 | 325 days |
| BROTHERS, OR US | 4,640 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| BURNS MUNI AP, OR US | 4,140 ft | June 19 | September 1 | 74 days |
| CASCADE LOCKS, OR US | 140 ft | March 31 | November 11 | 229 days |
| CASCADIA, OR US | 960 ft | May 6 | October 3 | 155 days |
| CAVE JUNCTION 1 WNW, OR US | 1,380 ft | May 8 | October 4 | 151 days |
| CHEMULT, OR US | 4,760 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| CHILOQUIN 12 NW (FORT KLAMATH), OR US | 4,180 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| CLATSKANIE, OR US | 20 ft | May 1 | October 15 | 173 days |
| CLOVERDALE, OR US32°F is reached in 99.5% of years here. Its frost dates describe only those years. | 10 ft | March 31 | November 9 | 234 days |
| CONDON, OR US | 2,880 ft | May 17 | October 2 | 136 days |
| COOS BAY 8 SW, OR US | 10 ft | April 24 | October 19 | 185 days |
| COQUILLE CITY, OR US | 20 ft | April 9 | October 29 | 210 days |
| CORVALLIS 10 SSW, OR US | 310 ft | April 24 | October 21 | 190 days |
| CORVALLIS STATE UNIV, OR US | 230 ft | April 27 | October 20 | 182 days |
| CORVALLIS WATER BUREAU, OR US | 590 ft | May 23 | October 1 | 135 days |
| COTTAGE GROVE 2E, OR US | 600 ft | May 1 | October 15 | 170 days |
| COTTAGE GROVE DAM, OR US | 830 ft | April 22 | October 26 | 192 days |
| COUGAR DAM, OR US32°F is reached in 99.9% of years here. Its frost dates describe only those years. | 1,260 ft | March 13 | November 18 | 257 days |
| CRATER LAKE NPS HQ, OR US | 6,480 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| DALLAS 2 NE, OR US | 290 ft | April 25 | October 25 | 187 days |
| DAYVILLE 8 NW, OR US | 2,260 ft | May 10 | October 1 | 147 days |
| DETROIT DAM, OR US32°F is reached in 99.9% of years here. Its frost dates describe only those years. | 1,220 ft | March 23 | November 22 | 251 days |
| DORENA, OR US | 820 ft | April 27 | October 19 | 180 days |
| DRAIN, OR US | 290 ft | April 28 | October 16 | 181 days |
| DREWSEY, OR US | 3,520 ft | June 13 | September 1 | 80 days |
| DUFUR, OR US | 1,330 ft | May 20 | October 1 | 138 days |
| ELGIN, OR US | 2,700 ft | June 3 | September 10 | 103 days |
| ELKTON 1SW, OR US | 130 ft | April 26 | October 28 | 192 days |
| ELKTON 3 SW, OR US | 120 ft | April 1 | October 29 | 221 days |
| ENTERPRISE 20 NNE, OR US | 3,280 ft | June 20 | August 30 | 72 days |
| ESTACADA 2 SE, OR US | 510 ft | April 5 | November 4 | 216 days |
| EUGENE MAHLON SWEET AP, OR US | 350 ft | April 25 | October 15 | 181 days |
| FALLS CITY 2 SSW, OR US | 690 ft | April 27 | October 31 | 190 days |
| FERN RIDGE-VENETA, OR US | 480 ft | April 27 | October 18 | 177 days |
| FIELDS, OR US | 4,230 ft | May 20 | October 1 | 134 days |
| FLORENCE #2, OR US32°F is reached in 99.9% of years here. Its frost dates describe only those years. | 80 ft | April 22 | November 6 | 205 days |
| FOREST GROVE, OR US | 180 ft | April 26 | October 18 | 181 days |
| FOSSIL, OR US | 2,650 ft | June 17 | September 5 | 83 days |
| FOSTER DAM, OR US | 550 ft | April 24 | October 20 | 183 days |
| FT CLATSOP NATL MEM, OR US | 40 ft | April 11 | November 8 | 219 days |
| GERBER DAM, OR US | 4,870 ft | June 6 | September 15 | 103 days |
| GOLD BEACH RS, OR US32°F is reached in 88.6% of years here. Its frost dates describe only those years. | 50 ft | March 2 | December 4 | 291 days |
| GOVERNMENT CAMP, OR US | 3,980 ft | June 2 | October 1 | 123 days |
| GRANTS PASS, OR US | 930 ft | April 19 | October 19 | 189 days |
| GRIZZLY, OR US | 3,630 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| HALFWAY, OR US | 2,650 ft | May 22 | September 18 | 121 days |
| HART MTN REFUGE, OR US | 5,620 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| HEADWORKS PORTLAND WTR B, OR US | 750 ft | April 3 | November 8 | 224 days |
| HEPPNER, OR US | 1,880 ft | May 1 | October 12 | 164 days |
| HERMISTON 2 NW, OR US | 460 ft | May 3 | October 2 | 154 days |
| HERMISTON MUNI AP, OR US | 640 ft | May 2 | October 3 | 158 days |
| HONEYMAN SP, OR US | 120 ft | April 5 | November 11 | 224 days |
| HOOD RVR EXP STN, OR US | 500 ft | April 28 | October 6 | 167 days |
| HOWARD PRAIRIE DAM, OR US | 4,570 ft | June 17 | September 16 | 97 days |
| HUNTINGTON, OR US | 2,110 ft | April 29 | October 8 | 164 days |
| IDLEYLD PARK 4 NE, OR US | 1,080 ft | May 5 | October 10 | 163 days |
| ILLAHE, OR US32°F is reached in 99.9% of years here. Its frost dates describe only those years. | 350 ft | April 12 | November 5 | 217 days |
| JOHN DAY 35 WNW, OR US | 2,250 ft | May 5 | October 7 | 158 days |
| JOHN DAY, OR US | 3,060 ft | June 4 | September 11 | 104 days |
| JOSEPH, OR US | 4,180 ft | June 7 | September 24 | 110 days |
| KENO, OR US | 4,130 ft | June 13 | September 14 | 98 days |
| KENT, OR US | 2,710 ft | May 26 | October 4 | 135 days |
| KLAMATH FALLS INTL AP, OR US | 4,080 ft | June 16 | September 13 | 91 days |
| LA GRANDE, OR US | 2,750 ft | May 13 | September 27 | 137 days |
| LACOMB 3 NNE, OR US | 520 ft | May 1 | October 17 | 172 days |
| LAKEVIEW 2 NNW, OR US | 4,890 ft | June 12 | September 9 | 92 days |
| LANGLOIS #2, OR US32°F is reached in 99.8% of years here. Its frost dates describe only those years. | 90 ft | March 30 | November 14 | 242 days |
| LAUREL MTN, OR US | 3,590 ft | May 30 | October 16 | 146 days |
| LEABURG 1 SW, OR US | 670 ft | April 16 | November 1 | 206 days |
| LEBANON, OR US | 330 ft | March 25 | November 7 | 233 days |
| LEMOLO LAKE 3 NNW, OR US | 4,080 ft | June 10 | September 14 | 102 days |
| LONG CREEK, OR US | 3,740 ft | June 14 | September 7 | 88 days |
| LOOKOUT PT DAM, OR US | 710 ft | March 18 | November 16 | 248 days |
| LOST CREEK DAM, OR US | 1,580 ft | May 5 | October 10 | 161 days |
| MADRAS 2 N, OR US | 2,440 ft | May 28 | September 28 | 125 days |
| MADRAS, OR US | 2,230 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| MALHEUR BRANCH EXP STN, OR US | 2,260 ft | April 30 | October 8 | 163 days |
| MALHEUR REFUGE HQ, OR US | 4,120 ft | June 7 | September 11 | 101 days |
| MAPLETON, OR US32°F is reached in 93.4% of years here. Its frost dates describe only those years. | 20 ft | February 28 | November 29 | 286 days |
| MARION FORKS FISH HATCHERY, OR US | 2,480 ft | May 25 | September 21 | 122 days |
| MC DERMITT 26 N, OR US | 4,460 ft | June 11 | September 19 | 102 days |
| MC MINNVILLE, OR US | 150 ft | April 15 | October 30 | 203 days |
| MCKENZIE RVR RS, OR US | 1,480 ft | May 8 | October 2 | 147 days |
| MCMINNVILLE MUNI AP, OR US | 160 ft | April 26 | October 17 | 182 days |
| MCNARY DAM #2, OR US | 360 ft | April 4 | October 29 | 208 days |
| MEACHAM, OR US | 3,720 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| MEDFORD ROGUE VLY AP, OR US | 1,300 ft | April 18 | October 23 | 192 days |
| MILTON FREEWATER, OR US | 970 ft | April 3 | October 22 | 206 days |
| MITCHELL 2 E, OR US | 3,320 ft | May 31 | September 29 | 123 days |
| MOLALLA 7NE, OR US | 650 ft | March 27 | November 11 | 233 days |
| MONUMENT 2, OR US | 2,000 ft | May 14 | September 20 | 129 days |
| MORO, OR US | 1,870 ft | May 20 | September 28 | 132 days |
| N WILLAMETTE EXP STN, OR US | 150 ft | March 28 | November 5 | 229 days |
| NATURE PARK-BEAVERTON, OR US32°F is reached in 96.9% of years here. Its frost dates describe only those years. | 190 ft | February 22 | November 24 | 284 days |
| NEWPORT 1 SE, OR US32°F is reached in 92.2% of years here. Its frost dates describe only those years. | 10 ft | February 28 | December 4 | 287 days |
| NEWPORT 3N, OR US32°F is reached in 98.3% of years here. Its frost dates describe only those years. | 220 ft | March 28 | November 26 | 251 days |
| NEWPORT, OR US32°F is reached in 99.9% of years here. Its frost dates describe only those years. | 120 ft | April 1 | November 15 | 236 days |
| NORTH BEND RGNL AP, OR US32°F is reached in 95.3% of years here. Its frost dates describe only those years. | 20 ft | March 5 | November 27 | 275 days |
| NYSSA, OR US | 2,170 ft | April 25 | October 12 | 172 days |
| O O RCH, OR US | 4,140 ft | June 21 | August 31 | 77 days |
| OAKRIDGE FISH HATCHERY, OR US | 1,270 ft | May 1 | October 16 | 171 days |
| ODELL LAKE-EAST, OR US | 4,800 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| ONTARIO KSRV, OR US | 2,150 ft | April 29 | October 4 | 160 days |
| ONTARIO MUNI AP, OR US | 2,190 ft | April 28 | October 8 | 168 days |
| OREGON CITY, OR US | 170 ft | March 27 | November 9 | 230 days |
| OTIS 2 NE, OR US | 150 ft | April 18 | November 8 | 211 days |
| OWYHEE DAM, OR US | 2,400 ft | May 14 | September 29 | 140 days |
| PAISLEY, OR US | 4,360 ft | June 15 | September 7 | 86 days |
| PARKDALE 1 NNE, OR US | 1,520 ft | May 22 | September 29 | 132 days |
| PAULINA, OR US | 3,680 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| PELTON DAM, OR US | 1,410 ft | May 13 | October 3 | 144 days |
| PENDLETON BRANCH EXP STN, OR US | 1,490 ft | May 19 | September 18 | 124 days |
| PENDLETON DWTN, OR US | 1,040 ft | April 30 | October 3 | 160 days |
| PENDLETON WFO, OR US | 1,510 ft | April 24 | October 16 | 178 days |
| PENDLETON, OR US | 1,520 ft | May 2 | October 9 | 166 days |
| PILOT ROCK 1 SE, OR US | 1,720 ft | May 15 | September 28 | 137 days |
| PORT ORFORD #2, OR US32°F is reached in 95.7% of years here. Its frost dates describe only those years. | 40 ft | February 28 | November 23 | 276 days |
| PORTLAND INTL AP, OR US | 20 ft | March 21 | November 11 | 236 days |
| PORTLAND KGW-TV, OR US32°F is reached in 99.7% of years here. Its frost dates describe only those years. | 160 ft | March 6 | November 22 | 265 days |
| PORTLAND TROUTDALE AP, OR US | 30 ft | March 27 | November 9 | 235 days |
| PORTLAND WFO, OR US | 20 ft | March 24 | November 13 | 238 days |
| PORTLAND-HILLSBORO AP, OR US | 200 ft | April 25 | October 14 | 179 days |
| POWERS, OR US | 230 ft | March 31 | November 2 | 223 days |
| PRINEVILLE, OR US | 2,880 ft | June 10 | September 12 | 100 days |
| PROSPECT 2 SW, OR US | 2,480 ft | May 28 | September 26 | 124 days |
| REDMOND ROBERTS FLD, OR US | 3,040 ft | June 17 | September 8 | 88 days |
| REX 1 S, OR US | 520 ft | April 2 | November 12 | 228 days |
| RICHLAND, OR US | 2,210 ft | May 16 | September 24 | 134 days |
| RIDDLE, OR US | 680 ft | April 11 | October 26 | 204 days |
| RILEY 10 WSW, OR US | 4,580 ft | June 19 | September 4 | 77 days |
| RIVERSIDE 7 SSW, OR US | 3,380 ft | June 15 | September 1 | 79 days |
| ROCKVILLE 5 N, OR US | 3,670 ft | June 7 | September 8 | 97 days |
| ROME 2 NW, OR US | 3,400 ft | June 20 | September 4 | 78 days |
| ROME ST AP, OR US | 4,050 ft | June 3 | September 14 | 107 days |
| ROSEBURG KQEN, OR US | 420 ft | April 1 | November 5 | 222 days |
| ROSEBURG RGNL AP, OR US32°F is reached in 99.9% of years here. Its frost dates describe only those years. | 520 ft | March 30 | November 8 | 229 days |
| RUCH, OR US | 1,550 ft | May 11 | October 4 | 149 days |
| SAINT HELENS RFD, OR US | 270 ft | April 30 | November 1 | 186 days |
| SALEM MCNARY FLD, OR US | 210 ft | April 13 | October 26 | 200 days |
| SANTIAM JUNCTION, OR US | 3,750 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| SCAPPOOSE IND AP, OR US | 60 ft | April 19 | October 26 | 198 days |
| SCOTTS MILLS 9 SE, OR US | 2,310 ft | May 5 | October 27 | 179 days |
| SEASIDE, OR US | 10 ft | April 11 | November 1 | 209 days |
| SENECA, OR US | 4,660 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| SEXTON SUMMIT, OR US | 3,830 ft | May 27 | October 21 | 152 days |
| SHEAVILLE 1 SE, OR US | 4,620 ft | June 1 | September 22 | 116 days |
| SILVER CREEK FALLS, OR US | 1,350 ft | May 5 | October 13 | 165 days |
| SILVER LAKE RS, OR US | 4,380 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| SILVERTON, OR US | 410 ft | April 4 | November 2 | 214 days |
| SISTERS, OR US | 3,180 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| SQUAW BUTTE-NORTHERN GREAT BAS, OR US | 4,660 ft | June 17 | September 20 | 97 days |
| STAYTON, OR US | 420 ft | April 4 | October 30 | 210 days |
| SUMMER LAKE 1 S, OR US | 4,190 ft | June 16 | September 9 | 87 days |
| SUNRIVER, OR US | 4,180 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| THE DALLES, OR US | 150 ft | April 21 | October 16 | 180 days |
| THE POPLARS, OR US | 4,310 ft | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station | Not calculated: frost this cold is possible year-round at this station |
| THREE LYNX, OR US | 1,120 ft | April 16 | October 30 | 204 days |
| TILLAMOOK 6SE, OR US | 140 ft | April 19 | October 26 | 203 days |
| TILLAMOOK, OR US | 10 ft | May 2 | October 9 | 168 days |
| TOKETEE FALLS, OR US | 2,060 ft | May 6 | October 9 | 160 days |
| TROUTDALE, OR US | 30 ft | April 5 | November 8 | 222 days |
| UNION, OR US | 2,780 ft | May 19 | September 20 | 126 days |
| VALE, OR US | 2,240 ft | May 16 | September 23 | 128 days |
| VERNONIA #2, OR US | 630 ft | May 17 | September 24 | 131 days |
| WALLOWA, OR US | 2,920 ft | June 18 | September 3 | 79 days |
| WESTFALL, OR US | 3,040 ft | May 13 | September 28 | 138 days |
| WICKIUP DAM, OR US | 4,360 ft | June 16 | September 12 | 88 days |
| WINCHESTER BAY COAST GRD, OR US32°F is reached in 99.8% of years here. Its frost dates describe only those years. | 10 ft | April 4 | November 10 | 229 days |
| WINCHESTER, OR US | 460 ft | April 10 | October 28 | 203 days |
| YACHATS, OR US32°F is reached in 91.7% of years here. Its frost dates describe only those years. | 50 ft | March 2 | December 1 | 281 days |
Data sources
- NOAA U.S. Climate Normals, frost dates, 1991–2020 normals, version 1.0.1
- Files: us-climate-normals_1991-2020_v1.0.1_annualseasonal_multivariate_by-station_c20230404.tar.gz, inventory_30yr.txt from NOAA NCEI. Retrieved October 10, 2026.
Related pages
- Planting calendar and frost dates by ZIP code
- Alabama frost dates and planting windows
- Arizona frost dates and planting windows
- Arkansas frost dates and planting windows
- California frost dates and planting windows
- Colorado frost dates and planting windows
- Connecticut frost dates and planting windows
- Delaware frost dates and planting windows
- Florida frost dates and planting windows
- Georgia frost dates and planting windows
- Idaho frost dates and planting windows
- Illinois frost dates and planting windows
- Indiana frost dates and planting windows
- Iowa frost dates and planting windows
- Kansas frost dates and planting windows
- Kentucky frost dates and planting windows
- Louisiana frost dates and planting windows
- Maine frost dates and planting windows
- Maryland frost dates and planting windows
- Massachusetts frost dates and planting windows
- Michigan frost dates and planting windows
- Minnesota frost dates and planting windows
- Mississippi frost dates and planting windows
- Missouri frost dates and planting windows
- Montana frost dates and planting windows
- Nebraska frost dates and planting windows
- Nevada frost dates and planting windows
- New Hampshire frost dates and planting windows
- New Jersey frost dates and planting windows
- New Mexico frost dates and planting windows
- New York frost dates and planting windows
- North Carolina frost dates and planting windows
- North Dakota frost dates and planting windows
- Ohio frost dates and planting windows
- Oklahoma frost dates and planting windows
- Pennsylvania frost dates and planting windows
- Rhode Island frost dates and planting windows
- South Carolina frost dates and planting windows
- South Dakota frost dates and planting windows
- Tennessee frost dates and planting windows
- Texas frost dates and planting windows
- Utah frost dates and planting windows
- Vermont frost dates and planting windows
- Virginia frost dates and planting windows
- Washington frost dates and planting windows
- West Virginia frost dates and planting windows
- Wisconsin frost dates and planting windows
- Wyoming frost dates and planting windows
- Methods and sources