GardenFacts

All states › Washington

Frost dates and growing zones in Washington

11 town pages so far. Zones from the 2023 USDA Plant Hardiness Zone Map, frost dates from NOAA 1991-2020 normals at the nearest weather station.

Towns covered so far in Washington fall in USDA zones 7a, 7b, 8b, 9a. Median dates mean frost comes later (spring) or earlier (fall) in half of years.

Towns

TownZoneMedian last frostMedian first frost
Seattle9aMar 8Nov 23
Spokane7aApr 26Oct 12
Tacoma8bMar 8Nov 14
Vancouver8bMar 13Nov 19
Bellevue9aMar 8Nov 23
Kent8bMar 20Nov 10
Yakima7aMay 8Oct 4
Bellingham8bApr 1Nov 2
Kennewick7bMar 28Oct 30
Redmond8bMar 8Nov 23
Olympia8bApr 29Oct 14

Zones in Washington