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Lothair, MT planting calendar

When to plant vegetables in Lothair, MT (USDA hardiness zone 4a). Typical last spring frost around May 23, 2026 10 days year to year), first fall frost around Sep 16, 202610 days).

Playing it safe? Spring frost holds off until about Jun 4, 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:

Or get a printable Lothair calendar and sowing reminders by email:

Still time to plant

As of today, these crops can still reach harvest before Lothair, MT’s first frost (~Sep 16, 2026) — fastest first.

Month by month in Lothair, MT

February

March

April

May

June

July

Understand your frost dates

More Montana planting calendars

ZIP codes in Lothair

59461

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