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Grand Forks Afb, ND planting calendar

When to plant vegetables in Grand Forks Afb, ND (USDA hardiness zone 4a). Typical last spring frost around May 16, 2026 11 days year to year), first fall frost around Sep 27, 20269 days).

Playing it safe? Spring frost holds off until about May 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:

Or get a printable Grand Forks Afb calendar and sowing reminders by email:

Still time to plant

As of today, these crops can still reach harvest before Grand Forks Afb, ND’s first frost (~Sep 27, 2026) — fastest first.

Month by month in Grand Forks Afb, ND

February

March

April

May

June

July

August

Understand your frost dates

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