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Planting calendar for ZIP 03230 (Danbury, NH)

When to plant vegetables in Danbury, NH (USDA hardiness zone 5a). Typical last spring frost around May 21, 2026 11 days year to year), first fall frost around Sep 26, 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.

See the full Danbury, NH planting calendar for dates typical of the whole city.

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Month by month in Danbury, NH

February

March

April

May

June

July

August

Understand your frost dates

Frost dates for ZIP 03230: NOAA 1991-2020 normals (USC00273530 GRAFTON, NH US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.