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Planting calendar for ZIP 57042 (Madison, SD)

When to plant vegetables in Madison, SD (USDA hardiness zone 4b). Typical last spring frost around May 5, 2026 10 days year to year), first fall frost around Sep 30, 202610 days).

Playing it safe? Spring frost holds off until about May 17, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Madison, SD planting calendar for dates typical of the whole city.

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Month by month in Madison, SD

January

February

March

April

May

July

August

Understand your frost dates

Frost dates for ZIP 57042: NOAA 1991-2020 normals (USC00395090 MADISON 2SE, SD US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.