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Planting calendar for ZIP 16635 (Duncansville, PA)

When to plant vegetables in Duncansville, PA (USDA hardiness zone 6b). Typical last spring frost around Apr 25, 2026 13 days year to year), first fall frost around Oct 20, 202611 days).

Playing it safe? Spring frost holds off until about May 11, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Duncansville, PA planting calendar for dates typical of the whole city.

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Month by month in Duncansville, PA

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February

March

April

May

August

Understand your frost dates

Frost dates for ZIP 16635: NOAA 1991-2020 normals (USC00360132 ALTOONA 7 SW, PA US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.