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Planting calendar for ZIP 82334 (Sinclair, WY)

When to plant vegetables in Sinclair, WY (USDA hardiness zone 5a). Typical last spring frost around Jun 1, 2026 12 days year to year), first fall frost around Sep 15, 202610 days).

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

See the full Sinclair, WY planting calendar for dates typical of the whole city.

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Month by month in Sinclair, WY

February

March

April

May

June

July

Understand your frost dates

Frost dates for ZIP 82334: NOAA 1991-2020 normals (USW00024057 RAWLINS MUNI AP, WY US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.