Washington Frost Dates
The median last spring freeze and first fall freeze (32°F) at 154 NOAA stations in Washington, 1991-2020, with the growing season between them.
Every station
A median date has an even chance of a later freeze in spring or an earlier one in fall. Each town page gives the dates at 36, 32 and 28°F and every probability from 10 to 90 percent.
| Station | Elevation | Last freeze | First freeze | Season, days | Town page |
|---|---|---|---|---|---|
| Aberdeen | 10 ft | March 29 | November 15 | 231 | Aberdeen |
| Aberdeen 20NNE | 435 ft | April 15 | November 2 | 201 | Central Park |
| Anacortes | 20 ft | March 8 | November 20 | 257 | Anacortes |
| Arlington | 100 ft | April 22 | October 19 | 180 | Arlington |
| Baring | 770 ft | April 14 | October 29 | 198 | May Creek |
| Battle Ground | 284 ft | April 26 | October 16 | 173 | Battle Ground |
| Bellingham 3 Ssw | 15 ft | April 1 | November 2 | 215 | Bellingham |
| Bellingham Intl AP | 149 ft | March 31 | October 30 | 213 | Marietta-Alderwood |
| Bickleton | 3,015 ft | May 16 | October 9 | 146 | |
| Blaine | 60 ft | March 31 | November 4 | 218 | Blaine |
| Boundary Dam | 1,837 ft | May 4 | October 4 | 153 | Colville |
| Bremerton | 110 ft | March 29 | November 14 | 230 | Navy Yard City |
| Buckley 1 Ne | 685 ft | April 7 | October 30 | 206 | Buckley |
| Carson Fish Hatchery | 1,134 ft | May 2 | October 9 | 160 | Carson |
| Cedar Lake | 1,560 ft | April 23 | November 1 | 192 | Wilderness Rim |
| Centralia | 185 ft | April 22 | October 27 | 188 | Centralia |
| Chelan | 1,194 ft | April 17 | October 22 | 188 | Chelan |
| Chewelah | 1,670 ft | May 16 | September 15 | 122 | Chewelah |
| Chief Joseph Dam | 834 ft | April 26 | October 11 | 168 | Bridgeport |
| Cle Elum | 1,900 ft | May 13 | September 25 | 135 | Cle Elum |
| Clearbrook | 64 ft | April 18 | October 18 | 183 | Nooksack |
| Clearwater | 80 ft | April 29 | October 17 | 171 | Taholah |
| Colville | 1,554 ft | May 2 | October 2 | 153 | Colville |
| Concrete Ppl Fish Stn | 195 ft | March 28 | November 14 | 231 | Concrete |
| Connell 1 W | 1,020 ft | April 30 | October 12 | 165 | Connell |
| Cougar 6 E | 659 ft | April 1 | November 18 | 231 | Amboy |
| Coulee Dam 1 Sw | 1,719 ft | April 22 | October 21 | 182 | Grand Coulee |
| Coupeville 1 S | 50 ft | March 17 | November 11 | 239 | Coupeville |
| Cushman Powerhouse #2 | 21 ft | March 24 | November 15 | 236 | Skokomish |
| Darrington 21 Nne | 407 ft | April 16 | October 25 | 192 | Concrete |
| Darrington RS | 550 ft | April 16 | October 23 | 190 | Darrington |
| Davenport | 2,369 ft | June 6 | September 11 | 97 | Davenport |
| Dayton 1 Wsw | 1,557 ft | April 28 | October 13 | 168 | Dayton |
| Deer Park AP | 2,191 ft | May 22 | September 14 | 115 | Deer Park |
| Diablo Dam | 891 ft | April 10 | November 1 | 205 | Concrete |
| Easton | 2,170 ft | May 9 | October 6 | 150 | Roslyn |
| Ellensburg | 1,480 ft | May 8 | October 2 | 147 | Ellensburg |
| Ellensburg Bowers Fld | 1,766 ft | April 28 | October 7 | 162 | Ellensburg |
| Elma | 70 ft | May 1 | October 14 | 166 | Elma |
| Eltopia 8 Wsw | 700 ft | April 21 | October 22 | 184 | Richland |
| Elwha RS | 360 ft | April 9 | November 3 | 208 | Port Angeles |
| Entiat Fish Hatchery | 1,027 ft | April 5 | October 24 | 202 | Entiat |
| Ephrata Muni AP | 1,252 ft | April 22 | October 17 | 178 | Ephrata |
| Everett | 60 ft | March 24 | November 2 | 223 | Everett |
| Everett Snohomish AP | 606 ft | March 9 | November 17 | 253 | Lake Stickney |
| Forks 1 E | 350 ft | April 26 | October 25 | 182 | Forks |
| Friday Harbor AP | 109 ft | March 26 | November 10 | 229 | Friday Harbor |
| Glenoma | 840 ft | April 24 | October 15 | 174 | Morton |
| Goldendale | 1,640 ft | May 19 | September 25 | 129 | Goldendale |
| Grayland | 10 ft | March 29 | November 7 | 223 | Grayland |
| Grays Rvr Hatchery | 100 ft | April 27 | October 22 | 178 | Cathlamet |
| Harrington | 2,159 ft | May 31 | September 12 | 104 | Davenport |
| Hartline | 1,906 ft | May 2 | October 12 | 163 | Coulee City |
| Hatton 9 Se | 1,505 ft | April 25 | October 15 | 173 | Connell |
| Holden Village | 3,218 ft | May 25 | September 19 | 117 | Twisp |
| Hoquiam Bowerman AP | 12 ft | March 30 | November 14 | 229 | Hoquiam |
| Humptulips Salmon Hatchery | 140 ft | April 26 | October 22 | 179 | Taholah |
| Ice Harbor Dam | 368 ft | April 7 | October 22 | 198 | Burbank |
| Kennewick | 390 ft | March 28 | October 30 | 216 | Kennewick |
| Kent | 30 ft | March 20 | November 10 | 235 | Kent |
| Lacrosse | 1,476 ft | May 13 | September 26 | 136 | Saint John |
| Landsburg | 535 ft | April 20 | October 25 | 188 | Ravensdale |
| Leavenworth 3 S | 1,128 ft | May 10 | September 30 | 143 | Leavenworth |
| Lind 3 Ne | 1,630 ft | May 7 | October 4 | 150 | Lind |
| Long Beach Exp Stn | 25 ft | April 6 | October 26 | 203 | Long Beach |
| Longmire Rainier Nps | 2,762 ft | May 22 | October 3 | 134 | Eatonville |
| Longview | 12 ft | April 8 | November 5 | 211 | Kelso |
| Matlock 8 S | 110 ft | April 23 | October 20 | 180 | McCleary |
| Mayfield Pwr Plt | 280 ft | April 7 | November 13 | 220 | Mossyrock |
| Mazama | 2,141 ft | May 9 | September 29 | 143 | Twisp |
| Mcmillin Rsvr | 579 ft | April 11 | October 30 | 202 | South Hill |
| Mcnary Dam | 361 ft | March 27 | November 4 | 222 | |
| Methow 2 S | 1,135 ft | April 21 | October 15 | 177 | Pateros |
| Monroe | 120 ft | April 17 | October 23 | 189 | Monroe |
| Moses Lake Grant CO AP | 1,196 ft | April 27 | October 8 | 164 | Moses Lake North |
| Moxee City 10 E | 1,550 ft | May 4 | October 10 | 159 | Zillah |
| Mt Adams RS | 1,950 ft | May 18 | September 25 | 130 | Trout Lake |
| Mt Vernon 3 Wnw | 14 ft | March 24 | November 3 | 224 | Mount Vernon |
| Mud Mtn Dam | 1,308 ft | April 18 | October 31 | 196 | Buckley |
| Naselle 2 Ene | 50 ft | April 24 | October 20 | 179 | |
| Newhalem | 525 ft | April 2 | November 14 | 226 | Concrete |
| Newport | 2,162 ft | May 12 | September 21 | 132 | Newport |
| Northport | 1,497 ft | May 8 | October 1 | 146 | Kettle Falls |
| Odessa | 1,543 ft | May 14 | September 26 | 135 | Odessa |
| Olga 2 Se | 80 ft | February 26 | November 29 | 277 | Friday Harbor |
| Olympia AP | 188 ft | April 29 | October 14 | 168 | Tumwater |
| Omak AP | 1,296 ft | April 30 | October 7 | 160 | Omak |
| Packwood | 1,060 ft | April 30 | October 8 | 161 | Morton |
| Palmer 3 Ese | 920 ft | April 3 | November 11 | 222 | Ravensdale |
| Pasco Tri Cities AP | 407 ft | April 27 | October 11 | 167 | Pasco |
| Plain | 1,936 ft | May 22 | September 22 | 123 | Leavenworth |
| Pomeroy | 1,934 ft | May 2 | October 4 | 155 | Pomeroy |
| Port Angeles | 90 ft | March 12 | November 19 | 252 | Port Angeles |
| Port Angeles Intl AP | 288 ft | April 8 | October 31 | 206 | Port Angeles |
| Port Townsend | 100 ft | March 1 | November 28 | 272 | Port Townsend |
| Priest Rapids Dam | 428 ft | March 24 | November 4 | 225 | Desert Aire |
| Prosser | 830 ft | April 14 | October 22 | 191 | Prosser |
| Pullman 2 Nw | 2,515 ft | May 6 | September 29 | 146 | Pullman |
| Pullman Moscow Rgnl AP | 2,551 ft | April 29 | October 2 | 156 | Pullman |
| Quilcene 2 Sw | 123 ft | April 11 | October 28 | 200 | Quilcene |
| Quillayute State AP | 185 ft | April 20 | October 26 | 189 | Forks |
| Quinault 4 Ne | 286 ft | April 7 | November 10 | 217 | Taholah |
| Quincy | 1,286 ft | April 21 | October 16 | 178 | Quincy |
| Raymond 2 S | 30 ft | April 26 | October 17 | 174 | Raymond |
| Renton Muni AP | 29 ft | March 13 | November 16 | 248 | Renton |
| Republic | 2,555 ft | May 30 | September 10 | 103 | Republic |
| Richland | 373 ft | April 6 | October 24 | 201 | Richland |
| Ritzville 1 Sse | 1,864 ft | May 7 | October 10 | 156 | Ritzville |
| Rosalia | 2,420 ft | May 7 | September 28 | 144 | Rosalia |
| Ross Dam | 1,236 ft | April 8 | November 10 | 216 | Concrete |
| Sagemoor | 595 ft | April 30 | October 13 | 166 | Pasco |
| Satus Pass 2 Ssw | 2,585 ft | June 2 | October 1 | 121 | Goldendale |
| Seattle Boeing Fld | 20 ft | March 13 | November 17 | 249 | Boulevard Park |
| Seattle Sand Pt Wsfo | 60 ft | March 8 | November 23 | 260 | Kirkland |
| Seattle Tacoma Intl AP | 370 ft | March 2 | November 23 | 266 | SeaTac |
| Sedro-Woolley | 60 ft | March 27 | November 6 | 224 | Sedro-Woolley |
| Selah 2 Ne | 1,120 ft | May 5 | October 4 | 152 | Selah |
| Sequim 2 E | 50 ft | April 21 | October 20 | 182 | Sequim |
| Shelton Sanderson Fld | 271 ft | April 27 | October 16 | 172 | Shelton |
| Skamania Fish Hatchery | 435 ft | April 29 | October 22 | 176 | Washougal |
| Smyrna | 560 ft | April 23 | October 12 | 172 | Royal City |
| Snoqualmie Falls | 440 ft | March 30 | November 7 | 222 | Snoqualmie |
| Snowden | 2,415 ft | May 12 | October 11 | 152 | Bingen |
| Spokane 17 Ssw | 2,267 ft | May 30 | September 4 | 97 | Cheney |
| Spokane Felts Fld | 1,953 ft | April 26 | October 15 | 172 | Millwood |
| Spokane Intl AP | 2,353 ft | April 26 | October 12 | 169 | Airway Heights |
| Spokane WFO | 2,392 ft | May 10 | September 26 | 139 | Airway Heights |
| St John | 1,952 ft | April 29 | October 4 | 158 | Saint John |
| Stampede Pass | 3,959 ft | May 14 | October 17 | 156 | Roslyn |
| Startup 1 E | 170 ft | April 15 | October 25 | 193 | Startup |
| Stehekin 4 Nw | 1,257 ft | April 27 | October 17 | 173 | Twisp |
| Sunnyside | 747 ft | May 1 | October 6 | 158 | Sunnyside |
| Sunnyside #2 | 805 ft | April 30 | October 8 | 161 | Sunnyside |
| Tacoma #1 | 25 ft | March 8 | November 14 | 251 | Tacoma |
| Tacoma Narrows AP | 292 ft | March 11 | November 21 | 255 | Wollochet |
| The Dalles Muni AP | 235 ft | April 11 | October 26 | 198 | Dallesport |
| Toledo FAA AP | 379 ft | April 5 | October 25 | 203 | Toledo |
| Tolt S Fk Rsvr | 2,000 ft | April 13 | November 10 | 211 | Lake Marcel-Stillwater |
| Tonasket 11NE | 3,434 ft | May 6 | October 6 | 153 | Tonasket |
| Tonasket 4 Nne | 960 ft | April 26 | October 10 | 167 | Tonasket |
| Upper Baker Dam | 690 ft | April 24 | October 29 | 188 | Concrete |
| Vancouver 4 Nne | 210 ft | April 26 | October 18 | 175 | Hazel Dell |
| Vancouver Pearson AP | 30 ft | March 29 | November 9 | 225 | Vancouver |
| Walla Walla Rgnl AP | 1,166 ft | March 27 | October 31 | 218 | Walla Walla East |
| Wapato | 841 ft | April 21 | October 15 | 177 | Wapato |
| Waterville | 2,664 ft | May 14 | October 1 | 140 | Waterville |
| Wenatchee | 626 ft | April 4 | October 28 | 207 | Wenatchee |
| Wenatchee Pangborn AP | 1,229 ft | April 8 | October 24 | 199 | Rock Island |
| Whidbey Island Nas | 47 ft | March 13 | November 14 | 246 | Ault Field |
| Whitman Mission | 632 ft | May 2 | October 1 | 152 | Garrett |
| Wilbur | 2,262 ft | June 1 | September 22 | 113 | Wilbur |
| Winthrop 1 Wsw | 1,749 ft | May 15 | September 22 | 130 | Twisp |
| Yakima #2 | 1,142 ft | April 8 | October 23 | 198 | West Valley |
| Yakima Air Terminal | 1,064 ft | May 8 | October 4 | 149 | Yakima |
Sources
NOAA NCEI U.S. Climate Normals, 1991-2020, annual and seasonal freeze probabilities. Public domain.