Frost dates by state
Washington Frost Dates
Across Washington's 281 cities and towns, the average last spring frost runs from March 1 in Port Townsend to June 6 in Davenport. Average last frost elsewhere: Seattle Mar 13, Spokane Apr 26 and Yakima Apr 8.
Frost dates for every city and town in Washington
Dates are for 32°F at the NOAA station nearest the ZIP code at each Washington town's center. "Safer date" is when only 1 year in 10 still gets a frost, a good target for tomatoes and peppers.
| City | Average last frost | Safer date | Average first frost | Frost-free days |
|---|---|---|---|---|
| Aberdeen | Mar 30 | Apr 25 | Nov 14 | 229 |
| Airway Heights | Apr 26 | May 10 | Oct 12 | 169 |
| Albion | May 6 | May 25 | Sep 29 | 146 |
| Algona | Mar 8 | Mar 31 | Nov 14 | 251 |
| Almira | Jun 1 | Jun 22 | Sep 22 | 113 |
| Anacortes | Mar 8 | Mar 28 | Nov 20 | 257 |
| Arlington | Mar 24 | Apr 11 | Nov 2 | 223 |
| Asotin | Apr 6 | Apr 26 | Oct 26 | 203 |
| Auburn | Mar 20 | Apr 8 | Nov 10 | 235 |
| Bainbridge Island | Mar 29 | Apr 24 | Nov 14 | 230 |
| Battle Ground | Apr 26 | May 12 | Oct 16 | 173 |
| Beaux Arts Village | Mar 13 | Apr 1 | Nov 17 | 249 |
| Bellevue | Mar 8 | Mar 29 | Nov 23 | 260 |
| Bellingham | Mar 31 | Apr 18 | Oct 30 | 213 |
| Benton City | Apr 6 | Apr 24 | Oct 24 | 201 |
| Bingen | Apr 20 | May 9 | Oct 13 | 176 |
| Black Diamond | Apr 20 | May 10 | Oct 25 | 188 |
| Blaine | Mar 31 | Apr 22 | Nov 4 | 218 |
| Bonney Lake | Apr 11 | Apr 29 | Oct 30 | 202 |
| Bothell | Mar 8 | Mar 29 | Nov 23 | 260 |
| Bremerton | Mar 29 | Apr 24 | Nov 14 | 230 |
| Brewster | Apr 21 | May 10 | Oct 15 | 177 |
| Bridgeport | Apr 26 | May 13 | Oct 11 | 168 |
| Brier | Mar 9 | Mar 29 | Nov 17 | 253 |
| Buckley | Apr 7 | Apr 27 | Oct 30 | 206 |
| Bucoda | Apr 22 | May 10 | Oct 27 | 188 |
| Burien | Mar 2 | Mar 23 | Nov 23 | 266 |
| Burlington | Mar 24 | Apr 14 | Nov 3 | 224 |
| Camas | Mar 26 | Apr 21 | Nov 17 | 236 |
| Carbonado | Apr 18 | May 10 | Oct 31 | 196 |
| Carnation | Mar 30 | Apr 21 | Nov 7 | 222 |
| Cashmere | Apr 4 | Apr 19 | Oct 28 | 207 |
| Castle Rock | Apr 8 | May 2 | Nov 5 | 211 |
| Cathlamet | Apr 24 | May 9 | Oct 24 | 183 |
| Centralia | Apr 22 | May 10 | Oct 27 | 188 |
| Chehalis | Apr 22 | May 10 | Oct 27 | 188 |
| Chelan | Apr 17 | Apr 30 | Oct 22 | 188 |
| Cheney | May 30 | Jul 13 | Sep 4 | 97 |
| Chewelah | May 16 | Jun 7 | Sep 15 | 122 |
| Clarkston | Apr 6 | Apr 26 | Oct 26 | 203 |
| Cle Elum | May 13 | Jun 1 | Sep 25 | 135 |
| Clyde Hill | Mar 8 | Mar 29 | Nov 23 | 260 |
| Colfax | May 6 | May 25 | Sep 29 | 146 |
| College Place | May 2 | May 18 | Oct 1 | 152 |
| Colton | Apr 29 | May 14 | Oct 2 | 156 |
| Colville | May 2 | May 17 | Oct 2 | 153 |
| Conconully | Apr 30 | May 15 | Oct 7 | 160 |
| Concrete | Apr 16 | May 6 | Oct 25 | 192 |
| Connell | Apr 30 | May 15 | Oct 12 | 165 |
| Cosmopolis | Apr 26 | May 12 | Oct 17 | 174 |
| Coulee City | May 2 | May 22 | Oct 12 | 163 |
| Coulee Dam | Apr 22 | May 7 | Oct 21 | 182 |
| Coupeville | Mar 17 | Apr 3 | Nov 11 | 239 |
| Covington | Mar 20 | Apr 8 | Nov 10 | 235 |
| Creston | Jun 1 | Jun 22 | Sep 22 | 113 |
| Cusick | May 12 | May 29 | Sep 21 | 132 |
| Darrington | Apr 16 | May 5 | Oct 23 | 190 |
| Davenport | Jun 6 | Jul 5 | Sep 11 | 97 |
| Dayton | Apr 28 | May 14 | Oct 13 | 168 |
| Deer Park | May 22 | Jun 15 | Sep 14 | 115 |
| Des Moines | Mar 2 | Mar 23 | Nov 23 | 266 |
| DuPont | Mar 11 | Apr 2 | Nov 21 | 255 |
| Duvall | Apr 17 | May 7 | Oct 23 | 189 |
| East Wenatchee | Apr 4 | Apr 19 | Oct 28 | 207 |
| Eatonville | May 22 | Jun 9 | Oct 3 | 134 |
| Edgewood | Mar 8 | Mar 31 | Nov 14 | 251 |
| Edmonds | Mar 9 | Mar 29 | Nov 17 | 253 |
| Electric City | Apr 22 | May 7 | Oct 21 | 182 |
| Ellensburg | Apr 28 | May 12 | Oct 7 | 162 |
| Elma | May 1 | May 19 | Oct 14 | 166 |
| Elmer City | Apr 22 | May 7 | Oct 21 | 182 |
| Endicott | May 13 | Jun 1 | Sep 26 | 136 |
| Entiat | Apr 5 | May 2 | Oct 24 | 202 |
| Enumclaw | Apr 18 | May 10 | Oct 31 | 196 |
| Ephrata | Apr 22 | May 6 | Oct 17 | 178 |
| Everett | Mar 24 | Apr 11 | Nov 2 | 223 |
| Everson | Apr 18 | May 5 | Oct 18 | 183 |
| Fairfield | May 11 | Jun 4 | Oct 5 | 147 |
| Farmington | May 15 | Jun 2 | Sep 21 | 129 |
| Federal Way | Mar 8 | Mar 31 | Nov 14 | 251 |
| Ferndale | Mar 31 | Apr 18 | Oct 30 | 213 |
| Fife | Mar 8 | Mar 31 | Nov 14 | 251 |
| Fircrest | Mar 11 | Apr 2 | Nov 21 | 255 |
| Forks | Apr 26 | May 10 | Oct 25 | 182 |
| Friday Harbor | Mar 26 | Apr 21 | Nov 10 | 229 |
| Garfield | May 15 | Jun 2 | Sep 21 | 129 |
| George | Apr 21 | May 5 | Oct 16 | 178 |
| Gig Harbor | Mar 11 | Apr 2 | Nov 21 | 255 |
| Gold Bar | Apr 15 | May 7 | Oct 25 | 193 |
| Goldendale | May 19 | Jun 9 | Sep 25 | 129 |
| Grand Coulee | Apr 22 | May 7 | Oct 21 | 182 |
| Grandview | May 1 | May 18 | Oct 6 | 158 |
| Granger | Apr 30 | May 13 | Oct 8 | 161 |
| Granite Falls | Mar 24 | Apr 11 | Nov 2 | 223 |
| Hamilton | Mar 27 | Apr 17 | Nov 6 | 224 |
| Harrah | Apr 21 | May 7 | Oct 15 | 177 |
| Harrington | May 31 | Jun 28 | Sep 12 | 104 |
| Hartline | May 2 | May 22 | Oct 12 | 163 |
| Hatton | Apr 30 | May 15 | Oct 12 | 165 |
| Hoquiam | Mar 30 | Apr 25 | Nov 14 | 229 |
| Hunts Point | Mar 8 | Mar 29 | Nov 23 | 260 |
| Ilwaco | Apr 6 | Apr 28 | Oct 26 | 203 |
| Index | Apr 15 | May 7 | Oct 25 | 193 |
| Ione | May 4 | May 18 | Oct 4 | 153 |
| Issaquah | Mar 30 | Apr 21 | Nov 7 | 222 |
| Kahlotus | Apr 25 | May 11 | Oct 15 | 173 |
| Kalama | Apr 8 | May 2 | Nov 5 | 211 |
| Kelso | Apr 8 | May 2 | Nov 5 | 211 |
| Kenmore | Mar 8 | Mar 29 | Nov 23 | 260 |
| Kennewick | Mar 28 | Apr 10 | Oct 30 | 216 |
| Kent | Mar 20 | Apr 8 | Nov 10 | 235 |
| Kettle Falls | May 2 | May 17 | Oct 2 | 153 |
| Kirkland | Mar 8 | Mar 29 | Nov 23 | 260 |
| Kittitas | May 8 | May 25 | Oct 2 | 147 |
| Krupp | May 14 | May 31 | Sep 26 | 135 |
| La Center | Apr 26 | May 12 | Oct 16 | 173 |
| La Conner | Mar 24 | Apr 14 | Nov 3 | 224 |
| Lacey | Apr 29 | May 15 | Oct 14 | 168 |
| LaCrosse | May 13 | Jun 1 | Sep 26 | 136 |
| Lake Forest Park | Mar 8 | Mar 29 | Nov 23 | 260 |
| Lake Stevens | Mar 24 | Apr 11 | Nov 2 | 223 |
| Lakewood | Mar 8 | Mar 31 | Nov 14 | 251 |
| Lamont | Apr 29 | May 15 | Oct 4 | 158 |
| Langley | Mar 9 | Mar 29 | Nov 17 | 253 |
| Latah | May 11 | Jun 4 | Oct 5 | 147 |
| Leavenworth | May 10 | May 28 | Sep 30 | 143 |
| Liberty Lake | Apr 26 | May 10 | Oct 15 | 172 |
| Lind | May 7 | May 21 | Oct 4 | 150 |
| Long Beach | Apr 6 | Apr 28 | Oct 26 | 203 |
| Longview | Apr 8 | May 2 | Nov 5 | 211 |
| Lyman | Mar 27 | Apr 17 | Nov 6 | 224 |
| Lynden | Apr 18 | May 5 | Oct 18 | 183 |
| Lynnwood | Mar 9 | Mar 29 | Nov 17 | 253 |
| Mabton | May 1 | May 18 | Oct 6 | 158 |
| Malden | May 7 | May 25 | Sep 28 | 144 |
| Mansfield | Apr 26 | May 13 | Oct 11 | 168 |
| Maple Valley | Mar 20 | Apr 8 | Nov 10 | 235 |
| Marcus | May 2 | May 17 | Oct 2 | 153 |
| Marysville | Mar 24 | Apr 11 | Nov 2 | 223 |
| Mattawa | Apr 23 | May 7 | Oct 12 | 172 |
| McCleary | May 1 | May 19 | Oct 14 | 166 |
| Medical Lake | May 10 | May 30 | Sep 26 | 139 |
| Medina | Mar 8 | Mar 29 | Nov 23 | 260 |
| Mercer Island | Mar 13 | Apr 1 | Nov 17 | 249 |
| Mesa | Apr 30 | May 16 | Oct 13 | 166 |
| Metaline | May 4 | May 18 | Oct 4 | 153 |
| Metaline Falls | May 4 | May 18 | Oct 4 | 153 |
| Mill Creek | Mar 9 | Mar 29 | Nov 17 | 253 |
| Millwood | Apr 26 | May 10 | Oct 15 | 172 |
| Milton | Mar 8 | Mar 31 | Nov 14 | 251 |
| Monroe | Apr 17 | May 7 | Oct 23 | 189 |
| Montesano | May 1 | May 19 | Oct 14 | 166 |
| Morton | Apr 24 | May 12 | Oct 15 | 174 |
| Moses Lake | Apr 27 | May 11 | Oct 8 | 164 |
| Mossyrock | Apr 7 | May 8 | Nov 13 | 220 |
| Mount Vernon | Mar 24 | Apr 14 | Nov 3 | 224 |
| Mountlake Terrace | Mar 8 | Mar 29 | Nov 23 | 260 |
| Moxee | Apr 21 | May 7 | Oct 15 | 177 |
| Mukilteo | Mar 9 | Mar 29 | Nov 17 | 253 |
| Naches | Apr 8 | Apr 28 | Oct 23 | 198 |
| Napavine | Apr 5 | May 4 | Oct 25 | 203 |
| Nespelem | Apr 22 | May 7 | Oct 21 | 182 |
| Newcastle | Mar 13 | Mar 31 | Nov 16 | 248 |
| Newport | May 12 | May 29 | Sep 21 | 132 |
| Nooksack | Apr 18 | May 5 | Oct 18 | 183 |
| Normandy Park | Mar 2 | Mar 23 | Nov 23 | 266 |
| North Bend | Mar 30 | Apr 21 | Nov 7 | 222 |
| North Bonneville | Mar 14 | Apr 4 | Nov 27 | 258 |
| Northport | May 8 | May 26 | Oct 1 | 146 |
| Oak Harbor | Mar 13 | Apr 1 | Nov 14 | 246 |
| Oakesdale | May 7 | May 25 | Sep 28 | 144 |
| Oakville | May 1 | May 19 | Oct 14 | 166 |
| Ocean Shores | Mar 30 | Apr 25 | Nov 14 | 229 |
| Odessa | May 14 | May 31 | Sep 26 | 135 |
| Okanogan | Apr 30 | May 15 | Oct 7 | 160 |
| Olympia | Apr 29 | May 15 | Oct 14 | 168 |
| Omak | Apr 30 | May 15 | Oct 7 | 160 |
| Oroville | May 6 | May 25 | Oct 6 | 153 |
| Orting | Apr 11 | Apr 29 | Oct 30 | 202 |
| Othello | Apr 30 | May 15 | Oct 12 | 165 |
| Pacific | Mar 8 | Mar 31 | Nov 14 | 251 |
| Palouse | May 6 | May 25 | Sep 29 | 146 |
| Pasco | Mar 28 | Apr 10 | Oct 30 | 216 |
| Pateros | Apr 21 | May 10 | Oct 15 | 177 |
| Pe Ell | Apr 27 | May 18 | Oct 22 | 178 |
| Pomeroy | May 2 | May 19 | Oct 4 | 155 |
| Port Angeles | Apr 9 | Apr 29 | Nov 3 | 208 |
| Port Orchard | Mar 29 | Apr 24 | Nov 14 | 230 |
| Port Townsend | Mar 1 | Mar 23 | Nov 28 | 272 |
| Poulsbo | Mar 29 | Apr 24 | Nov 14 | 230 |
| Prescott | Apr 28 | May 14 | Oct 13 | 168 |
| Prosser | Apr 14 | May 7 | Oct 22 | 191 |
| Pullman | Apr 29 | May 14 | Oct 2 | 156 |
| Puyallup | Mar 8 | Mar 31 | Nov 14 | 251 |
| Quincy | Apr 21 | May 5 | Oct 16 | 178 |
| Rainier | Apr 29 | May 15 | Oct 14 | 168 |
| Raymond | Apr 26 | May 12 | Oct 17 | 174 |
| Reardan | May 10 | May 30 | Sep 26 | 139 |
| Redmond | Mar 8 | Mar 29 | Nov 23 | 260 |
| Renton | Mar 13 | Mar 31 | Nov 16 | 248 |
| Republic | May 30 | Jun 17 | Sep 10 | 103 |
| Richland | Apr 6 | Apr 24 | Oct 24 | 201 |
| Ridgefield | Apr 10 | May 1 | Nov 2 | 206 |
| Ritzville | May 7 | May 27 | Oct 10 | 156 |
| Riverside | Apr 30 | May 15 | Oct 7 | 160 |
| Rock Island | Apr 8 | Apr 23 | Oct 24 | 199 |
| Rockford | May 11 | Jun 4 | Oct 5 | 147 |
| Rosalia | May 7 | May 25 | Sep 28 | 144 |
| Roslyn | May 14 | Jun 5 | Oct 17 | 156 |
| Roy | Apr 11 | Apr 29 | Oct 30 | 202 |
| Royal City | Apr 23 | May 7 | Oct 12 | 172 |
| Ruston | Mar 11 | Apr 2 | Nov 21 | 255 |
| Sammamish | Mar 30 | Apr 21 | Nov 7 | 222 |
| SeaTac | Mar 2 | Mar 23 | Nov 23 | 266 |
| Seattle | Mar 13 | Apr 1 | Nov 17 | 249 |
| Sedro-Woolley | Mar 27 | Apr 17 | Nov 6 | 224 |
| Selah | Apr 8 | Apr 28 | Oct 23 | 198 |
| Sequim | Apr 21 | May 7 | Oct 20 | 182 |
| Shelton | Apr 27 | May 12 | Oct 16 | 172 |
| Shoreline | Mar 8 | Mar 29 | Nov 23 | 260 |
| Skykomish | Apr 14 | May 4 | Oct 29 | 198 |
| Snohomish | Mar 9 | Mar 29 | Nov 17 | 253 |
| Snoqualmie | Mar 30 | Apr 21 | Nov 7 | 222 |
| Soap Lake | Apr 22 | May 6 | Oct 17 | 178 |
| South Bend | Apr 26 | May 12 | Oct 17 | 174 |
| South Cle Elum | May 13 | Jun 1 | Sep 25 | 135 |
| South Prairie | Apr 7 | Apr 27 | Oct 30 | 206 |
| Spangle | May 30 | Jul 13 | Sep 4 | 97 |
| Spokane | Apr 26 | May 10 | Oct 12 | 169 |
| Spokane Valley | Apr 26 | May 10 | Oct 15 | 172 |
| Sprague | May 31 | Jun 28 | Sep 12 | 104 |
| Springdale | May 16 | Jun 7 | Sep 15 | 122 |
| St. John | Apr 29 | May 15 | Oct 4 | 158 |
| Stanwood | Apr 22 | May 6 | Oct 19 | 180 |
| Starbuck | Apr 28 | May 14 | Oct 13 | 168 |
| Steilacoom | Mar 11 | Apr 2 | Nov 21 | 255 |
| Stevenson | Mar 24 | Apr 16 | Nov 20 | 241 |
| Sultan | Apr 15 | May 7 | Oct 25 | 193 |
| Sumas | Apr 18 | May 5 | Oct 18 | 183 |
| Sumner | Apr 11 | Apr 29 | Oct 30 | 202 |
| Sunnyside | May 1 | May 18 | Oct 6 | 158 |
| Tacoma | Mar 8 | Mar 31 | Nov 14 | 251 |
| Tekoa | May 11 | Jun 4 | Oct 5 | 147 |
| Tenino | Apr 22 | May 10 | Oct 27 | 188 |
| Tieton | Apr 8 | Apr 28 | Oct 23 | 198 |
| Toledo | Apr 5 | May 4 | Oct 25 | 203 |
| Tonasket | May 6 | May 25 | Oct 6 | 153 |
| Toppenish | Apr 21 | May 7 | Oct 15 | 177 |
| Tukwila | Mar 13 | Apr 1 | Nov 17 | 249 |
| Tumwater | Apr 29 | May 15 | Oct 14 | 168 |
| Twisp | May 15 | Jun 1 | Sep 22 | 130 |
| Union Gap | Apr 8 | Apr 28 | Oct 23 | 198 |
| Uniontown | Apr 6 | Apr 26 | Oct 26 | 203 |
| University Place | Mar 11 | Apr 2 | Nov 21 | 255 |
| Vader | Apr 5 | May 4 | Oct 25 | 203 |
| Vancouver | Mar 29 | Apr 18 | Nov 9 | 225 |
| Waitsburg | Apr 28 | May 14 | Oct 13 | 168 |
| Walla Walla | Mar 27 | Apr 22 | Oct 31 | 218 |
| Wapato | Apr 21 | May 7 | Oct 15 | 177 |
| Warden | Apr 27 | May 11 | Oct 8 | 164 |
| Washougal | Mar 26 | Apr 21 | Nov 17 | 236 |
| Washtucna | Apr 25 | May 11 | Oct 15 | 173 |
| Waterville | Apr 17 | Apr 30 | Oct 22 | 188 |
| Waverly | May 7 | May 25 | Sep 28 | 144 |
| Wenatchee | Apr 4 | Apr 19 | Oct 28 | 207 |
| West Richland | Apr 6 | Apr 24 | Oct 24 | 201 |
| Westport | Mar 29 | Apr 24 | Nov 7 | 223 |
| White Salmon | Apr 20 | May 9 | Oct 13 | 176 |
| Wilbur | Jun 1 | Jun 22 | Sep 22 | 113 |
| Wilkeson | Apr 18 | May 10 | Oct 31 | 196 |
| Wilson Creek | May 2 | May 22 | Oct 12 | 163 |
| Winlock | Apr 5 | May 4 | Oct 25 | 203 |
| Winthrop | May 15 | Jun 1 | Sep 22 | 130 |
| Woodinville | Mar 8 | Mar 29 | Nov 23 | 260 |
| Woodland | Apr 18 | May 26 | Nov 7 | 203 |
| Woodway | Mar 9 | Mar 29 | Nov 17 | 253 |
| Yacolt | Apr 26 | May 12 | Oct 16 | 173 |
| Yakima | Apr 8 | Apr 28 | Oct 23 | 198 |
| Yarrow Point | Mar 8 | Mar 29 | Nov 23 | 260 |
| Yelm | Apr 29 | May 15 | Oct 14 | 168 |
| Zillah | Apr 21 | May 7 | Oct 15 | 177 |
Source: NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020. City centers from the US Census Bureau. Click a city for its nearest station and, where it has frost dates, hard-freeze dates and a vegetable planting calendar. See how we calculate.
Frequently asked questions
When is the last frost in Seattle, WA?
The average last spring frost in Seattle is March 13, and only 1 year in 10 has a frost after April 1. The average first fall frost is November 17. These come from NOAA's 1991–2020 records at the Seattle Boeing Fld station.
When should I plant tomatoes in Washington?
UNH Extension times tomato transplants for 1 to 2 weeks after the average last frost. In Seattle that's about Mar 20 to Mar 27; for a 9 in 10 chance of no later frost, wait until Apr 1. Look up your ZIP code for your own dates and a full vegetable planting calendar.
More for Washington: Washington climate zones (insulation) · Washington planting zones · Frost line depth by state