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Planting calendar for ZIP 84017 (Coalville, UT)

When to plant vegetables in Coalville, UT (USDA hardiness zone 5b). Typical last spring frost around Jun 7, 2026 14 days year to year), first fall frost around Sep 12, 202611 days).

Playing it safe? Spring frost holds off until about Jun 24, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Coalville, UT planting calendar for dates typical of the whole city.

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Month by month in Coalville, UT

March

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May

June

July

Understand your frost dates

Frost dates for ZIP 84017: NOAA 1991-2020 normals (USW00024120 COALVILLE, UT US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.