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Planting calendar for ZIP 98250 (Friday Harbor, WA)

When to plant vegetables in Friday Harbor, WA (USDA hardiness zone 9a). Typical last spring frost around Mar 26, 2026 21 days year to year), first fall frost around Nov 10, 202616 days).

Playing it safe? Spring frost holds off until about Apr 21, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Friday Harbor, WA planting calendar for dates typical of the whole city.

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Month by month in Friday Harbor, WA

January

February

March

April

May

August

September

December

Understand your frost dates

Frost dates for ZIP 98250: NOAA 1991-2020 normals (USW00094276 FRIDAY HARBOR AP, WA US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.