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Planting calendar for ZIP 99109 (Chewelah, WA)

When to plant vegetables in Chewelah, WA (USDA hardiness zone 6a). Typical last spring frost around May 16, 2026 15 days year to year), first fall frost around Sep 15, 202611 days).

Playing it safe? Spring frost holds off until about Jun 4, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

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

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Month by month in Chewelah, WA

February

March

April

May

June

July

Understand your frost dates

Frost dates for ZIP 99109: NOAA 1991-2020 normals (USC00451395 CHEWELAH, WA US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.