Washington frost dates
Median last spring frost and first fall frost for 492 places in Washington. Last frost ranges from Feb 26 in Blakely Island to Jun 6 in Davenport.
Largest cities
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Seattle | Mar 13 | Nov 17 | 249 d | 9a |
| Spokane | Apr 26 | Oct 15 | 172 d | 7a |
| Tacoma | Mar 8 | Nov 14 | 251 d | 8b |
| Vancouver | Apr 26 | Oct 18 | 175 d | 8b |
| Bellevue | Mar 8 | Nov 23 | 260 d | 9a |
| Kent | Mar 20 | Nov 10 | 235 d | 8b |
| Everett | Mar 9 | Nov 17 | 253 d | 8b |
| Renton | Mar 13 | Nov 16 | 248 d | 9a |
| Federal Way | Mar 20 | Nov 10 | 235 d | 8b |
| Yakima | Apr 8 | Oct 23 | 198 d | 7a |
| Kirkland | Mar 8 | Nov 23 | 260 d | 9a |
| Bellingham | Apr 1 | Nov 2 | 215 d | 8b |
| Kennewick | Mar 28 | Oct 30 | 216 d | 7b |
| Auburn | Mar 20 | Nov 10 | 235 d | 8b |
| Pasco | Apr 27 | Oct 11 | 167 d | 7a |
| Marysville | Mar 24 | Nov 2 | 223 d | 8b |
| Redmond | Mar 8 | Nov 23 | 260 d | 8b |
| Lakewood | Mar 8 | Nov 14 | 251 d | 8b |
| Olympia | Apr 29 | Oct 14 | 168 d | 8b |
| Richland | Apr 6 | Oct 24 | 201 d | 7b |
| Sammamish | Mar 30 | Nov 7 | 222 d | 8b |
| Lacey | Apr 29 | Oct 14 | 168 d | 8b |
| Bothell | Mar 8 | Nov 23 | 260 d | 8b |
| Edmonds | Mar 9 | Nov 17 | 253 d | 9a |
| Puyallup | Apr 11 | Oct 30 | 202 d | 8b |
| Bremerton | Mar 29 | Nov 14 | 230 d | 9a |
| Lynnwood | Mar 9 | Nov 17 | 253 d | 9a |
| Longview | Apr 8 | Nov 5 | 211 d | 8b |
| Issaquah | Mar 30 | Nov 7 | 222 d | 8b |
| Mount Vernon | Mar 27 | Nov 6 | 224 d | 8b |
| Wenatchee | Apr 4 | Oct 28 | 207 d | 7a |
| University Place | Mar 11 | Nov 21 | 255 d | 8b |
| Pullman | May 6 | Sep 29 | 146 d | 6b |
| Walla Walla | Mar 27 | Oct 31 | 218 d | 7a |
| Lake Stevens | Mar 24 | Nov 2 | 223 d | 8b |
| Spanaway | Apr 11 | Oct 30 | 202 d | 8b |
| Maple Valley | Apr 20 | Oct 25 | 188 d | 8b |
| Mercer Island | Mar 13 | Nov 17 | 249 d | 9a |
| Bainbridge Island | Mar 29 | Nov 14 | 230 d | 9a |
| Graham | Apr 11 | Oct 30 | 202 d | 8b |