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Planting calendar for ZIP 99017 (Lamont, WA)

When to plant vegetables in Lamont, WA (USDA hardiness zone 6b). Typical last spring frost around Apr 29, 2026 14 days year to year), first fall frost around Oct 4, 202613 days).

Playing it safe? Spring frost holds off until about May 16, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

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

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Month by month in Lamont, WA

January

February

March

April

May

July

August

Understand your frost dates

Frost dates for ZIP 99017: NOAA 1991-2020 normals (USC00457267 ST JOHN, WA US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.