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Butte, MT planting calendar

When to plant vegetables in Butte, MT (USDA hardiness zone 5a). Typical last spring frost around Jun 13, 2026 14 days year to year), first fall frost around Sep 5, 202610 days).

Playing it safe? Spring frost holds off until about Jun 30, 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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Still time to plant

As of today, these crops can still reach harvest before Butte, MT’s first frost (~Sep 5, 2026) — fastest first.

Month by month in Butte, MT

March

April

May

June

July

Understand your frost dates

Frost dates are NOAA 1991–2020 climate normals for a representative location in Butte, MT (covering 2 ZIPs); your exact dates depend on your address. Schedules are guidance, not guarantees.