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Planting calendar for ZIP 99328 (Dayton, WA)

When to plant vegetables in Dayton, WA (USDA hardiness zone 7a). Typical last spring frost around Apr 28, 2026 13 days year to year), first fall frost around Oct 13, 202611 days).

Playing it safe? Spring frost holds off until about May 14, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

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

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Month by month in Dayton, WA

January

February

March

April

May

July

August

Understand your frost dates

Frost dates for ZIP 99328: NOAA 1991-2020 normals (USC00452030 DAYTON 1 WSW, WA US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.