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Planting calendar for ZIP 49866 (Negaunee, MI)

When to plant vegetables in Negaunee, MI (USDA hardiness zone 4b). Typical last spring frost around May 22, 2026 11 days year to year), first fall frost around Sep 29, 202612 days).

Playing it safe? Spring frost holds off until about Jun 5, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Negaunee, MI planting calendar for dates typical of the whole city.

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Month by month in Negaunee, MI

February

March

April

May

June

July

August

Understand your frost dates

Frost dates for ZIP 49866: NOAA 1991-2020 normals (USW00094850 MARQUETTE, MI US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.