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Planting calendar for ZIP 59758 (West Yellowstone, MT)

When to plant vegetables in West Yellowstone, MT (USDA hardiness zone 4b). Typical last spring frost around Jun 15, 2026 15 days year to year), first fall frost around Sep 10, 202613 days).

Playing it safe? Spring frost holds off until about Jul 4, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

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

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Month by month in West Yellowstone, MT

March

April

May

June

July

Understand your frost dates

Frost dates for ZIP 59758: NOAA 1991-2020 normals (USC00244038 HEBGEN DAM, MT US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.