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Planting calendar for ZIP 59353 (Wibaux, MT)

When to plant vegetables in Wibaux, MT (USDA hardiness zone 4a). Typical last spring frost around May 27, 2026 11 days year to year), first fall frost around Sep 16, 202611 days).

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

See the full Wibaux, MT planting calendar for dates typical of the whole city.

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Month by month in Wibaux, MT

February

March

April

May

June

July

Understand your frost dates

Frost dates for ZIP 59353: NOAA 1991-2020 normals (USC00248957 WIBAUX 2 E, MT US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.