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Afton, WY planting calendar

When to plant vegetables in Afton, WY (USDA hardiness zone 5b). Typical last spring frost around Jun 20, 2026 14 days year to year), first fall frost around Sep 1, 202613 days).

Playing it safe? Spring frost holds off until about Jul 7, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

Want exact dates for your address, a drag-and-drop bed layout, and reminders when it’s time to sow? Enter your ZIP:

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Month by month in Afton, WY

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April

May

June

July

Understand your frost dates

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ZIP codes in Afton

83110

Frost dates are NOAA 1991–2020 climate normals for a representative location in Afton, WY (covering 1 ZIP); your exact dates depend on your address. Schedules are guidance, not guarantees.