Frost Dates & Planting Calendars in Washington
Typical last spring frost, first fall frost, and growing-season length for 137 cities in Washington, based on NOAA 1991–2020 climate normals. Click a city for its full frost-date summary, monthly temperature chart, and 42-crop planting calendar.
| City | Last Spring Frost (typical) | First Fall Frost (typical) | Growing Season | USDA Zone |
|---|---|---|---|---|
| Seattle | March 13 | November 17 | 247 days | 9a |
| Tri-Cities | April 27 | October 11 | 168 days | 7b |
| Spokane | April 26 | October 15 | 170 days | 7a |
| Tacoma | March 8 | November 14 | 250 days | 9a |
| Vancouver | March 29 | November 9 | 223 days | 8b |
| Bellevue | March 8 | November 23 | 259 days | 9a |
| Kent | March 20 | November 10 | 233 days | 9a |
| Everett | March 24 | November 2 | 223 days | 8b |
| Renton | March 13 | November 16 | 248 days | 9a |
| Federal Way | March 8 | November 14 | 250 days | 8b |
| Spokane Valley | April 26 | October 15 | 170 days | 7a |
| Yakima | May 8 | October 4 | 149 days | 7a |
| Kirkland | March 8 | November 23 | 259 days | 9a |
| Bellingham | April 1 | November 2 | 216 days | 8b |
| Kennewick | March 28 | October 30 | 216 days | 7b |
| Auburn | March 20 | November 10 | 233 days | 8b |
| Pasco | March 28 | October 30 | 216 days | 7b |
| Marysville | March 24 | November 2 | 223 days | 8b |
| Redmond | March 8 | November 23 | 259 days | 8b |
| Lakewood | March 11 | November 21 | 254 days | 8b |
| Olympia | April 29 | October 14 | 169 days | 8b |
| Shoreline | March 8 | November 23 | 259 days | 9a |
| Richland | April 6 | October 24 | 200 days | 7b |
| South Hill | April 11 | October 30 | 202 days | 8b |
| Sammamish | March 8 | November 23 | 259 days | 8b |
| Burien | March 2 | November 23 | 266 days | 9a |
| Lacey | April 29 | October 14 | 169 days | 8b |
| City of Sammamish | March 30 | November 7 | 223 days | 8b |
| Bothell | March 8 | November 23 | 259 days | 8b |
| Edmonds | March 9 | November 17 | 250 days | 9a |
| Puyallup | April 11 | October 30 | 202 days | 8b |
| Bremerton | March 29 | November 14 | 227 days | 9a |
| Lynnwood | March 9 | November 17 | 250 days | 9a |
| Longview | April 8 | November 5 | 210 days | 8b |
| Issaquah | March 13 | November 16 | 248 days | 8b |
| Parkland | March 8 | November 14 | 250 days | 8b |
| Mount Vernon | March 24 | November 3 | 224 days | 8b |
| West Lake Sammamish | March 13 | November 16 | 248 days | 8b |
| Wenatchee | April 4 | October 28 | 208 days | 7a |
| University Place | March 11 | November 21 | 254 days | 8b |
| Pullman | May 6 | September 29 | 143 days | 6b |
| Walla Walla | March 27 | October 31 | 219 days | 7a |
| Des Moines | March 2 | November 23 | 266 days | 9a |
| Lake Stevens | March 24 | November 2 | 223 days | 8b |
| East Hill-Meridian | March 20 | November 10 | 233 days | 8b |
| SeaTac | March 2 | November 23 | 266 days | 9a |
| Spanaway | April 11 | October 30 | 202 days | 8b |
| North Creek | March 9 | November 17 | 250 days | 8b |
| Opportunity | April 26 | October 15 | 170 days | 7a |
| Maple Valley | April 20 | October 25 | 187 days | 8b |
| Mercer Island | March 13 | November 17 | 247 days | 9a |
| Bainbridge Island | March 29 | November 14 | 227 days | 9a |
| Graham | April 11 | October 30 | 202 days | 8b |
| Picnic Point-North Lynnwood | March 9 | November 17 | 250 days | 8b |
| Inglewood-Finn Hill | March 8 | November 23 | 259 days | 9a |
| Oak Harbor | March 13 | November 14 | 244 days | 8b |
| Cottage Lake | April 17 | October 23 | 188 days | 8b |
| Moses Lake | April 27 | October 8 | 165 days | 7a |
| Kenmore | March 8 | November 23 | 259 days | 9a |
| Camas | March 26 | November 17 | 237 days | 9a |
| Mukilteo | March 9 | November 17 | 250 days | 8b |
| West Lake Stevens | March 24 | November 2 | 223 days | 8b |
| Mountlake Terrace | March 8 | November 23 | 259 days | 9a |
| Silver Firs | March 9 | November 17 | 250 days | 8b |
| Eastmont | March 9 | November 17 | 250 days | 8b |
| Mill Creek | March 9 | November 17 | 250 days | 8b |
| Tukwila | March 13 | November 16 | 248 days | 9a |
| Bonney Lake | April 11 | October 30 | 202 days | 8b |
| Salmon Creek | April 26 | October 18 | 177 days | 8b |
| Orchards | April 26 | October 18 | 177 days | 8b |
| Port Angeles | March 12 | November 19 | 252 days | 8b |
| Hazel Dell | April 26 | October 18 | 177 days | 8b |
| Battle Ground | April 26 | October 16 | 174 days | 8b |
| Silverdale | March 29 | November 14 | 227 days | 8b |
| Covington | March 20 | November 10 | 233 days | 8b |
| Tumwater | April 29 | October 14 | 169 days | 8a |
| Fairwood | March 13 | November 16 | 248 days | 8b |
| Ellensburg | May 8 | October 2 | 146 days | 7a |
| Columbia City | March 13 | November 17 | 247 days | 9a |
| Arlington | April 22 | October 19 | 181 days | 8b |
| Union Hill-Novelty Hill | March 8 | November 23 | 259 days | 8b |
| Frederickson | April 11 | October 30 | 202 days | 8b |
| Five Corners | April 26 | October 18 | 177 days | 8b |
| Anacortes | March 8 | November 20 | 255 days | 8b |
| Monroe | April 17 | October 23 | 188 days | 8b |
| Centralia | April 22 | October 27 | 188 days | 8b |
| Bothell West | March 9 | November 17 | 250 days | 8b |
| Sunnyside | May 1 | October 6 | 157 days | 7b |
| Aberdeen | March 29 | November 15 | 234 days | 8b |
| Mill Creek East | March 9 | November 17 | 250 days | 8b |
| Bryn Mawr-Skyway | March 13 | November 16 | 248 days | 9a |
| Martha Lake | March 9 | November 17 | 250 days | 8b |
| Washougal | March 26 | November 17 | 237 days | 9a |
| Elk Plain | April 11 | October 30 | 202 days | 8b |
| Camano | March 17 | November 11 | 237 days | 8b |
| West Richland | April 6 | October 24 | 200 days | 7b |
| East Wenatchee | April 4 | October 28 | 208 days | 7a |
| Port Orchard | March 29 | November 14 | 227 days | 8b |
| Lynden | April 18 | October 18 | 185 days | 8a |
| White Center | March 13 | November 17 | 247 days | 9a |
| Lake Forest Park | March 8 | November 23 | 259 days | 9a |
| Lea Hill | March 20 | November 10 | 233 days | 8b |
| Snoqualmie | March 30 | November 7 | 223 days | 8b |
| Kingsgate | March 8 | November 23 | 259 days | 9a |
| Ferndale | March 31 | October 30 | 211 days | 8b |
| Lakeland North | March 20 | November 10 | 233 days | 8b |
| West Valley | April 8 | October 23 | 196 days | 7a |
| Artondale | March 11 | November 21 | 254 days | 9a |
| Greenwood | March 8 | November 23 | 259 days | 9a |
| Kelso | April 8 | November 5 | 210 days | 8b |
| Woodinville | March 8 | November 23 | 259 days | 8b |
| Enumclaw | April 7 | October 30 | 204 days | 8a |
| Lakeland South | March 8 | November 14 | 250 days | 8b |
| Cheney | May 30 | September 4 | 94 days | 6b |
| Prairie Ridge | April 11 | October 30 | 202 days | 8b |
| Newcastle | March 13 | November 16 | 248 days | 8b |
| Grandview | May 1 | October 6 | 157 days | 7b |
| East Renton Highlands | March 13 | November 16 | 248 days | 8b |
| Joint Base Lewis McChord | March 11 | November 21 | 254 days | 8b |
| Maltby | April 17 | October 23 | 188 days | 8b |
| Sedro-Woolley | March 27 | November 6 | 224 days | 8b |
| Klahanie | March 30 | November 7 | 223 days | 8b |
| Vashon | March 2 | November 23 | 266 days | 9a |
| Lake Morton-Berrydale | April 20 | October 25 | 187 days | 8b |
| Poulsbo | March 29 | November 14 | 227 days | 8b |
| Veradale | April 26 | October 15 | 170 days | 7a |
| Dishman | April 26 | October 15 | 170 days | 7a |
| Fife | March 8 | November 14 | 250 days | 8b |
| Shelton | April 27 | October 16 | 175 days | 8b |
| Edgewood | March 8 | November 14 | 250 days | 8b |
| Walnut Grove | April 26 | October 18 | 177 days | 8b |
| Minnehaha | April 26 | October 18 | 177 days | 8b |
| Sumner | April 11 | October 30 | 202 days | 8b |
| Snohomish | March 24 | November 2 | 223 days | 8b |
| DuPont | March 11 | November 21 | 254 days | 8b |
| Port Townsend | March 1 | November 28 | 274 days | 8b |
| Tulalip | March 24 | November 2 | 223 days | 8b |