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Planting calendar for ZIP 60433 (Joliet, IL)

When to plant vegetables in Joliet, IL (USDA hardiness zone 6a). Typical last spring frost around Apr 19, 2026 13 days year to year), first fall frost around Oct 25, 202610 days).

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

See the full Joliet, IL planting calendar for dates typical of the whole city.

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Month by month in Joliet, IL

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September

Understand your frost dates

Frost dates for ZIP 60433: NOAA 1991-2020 normals (USC00114530 JOLIET BRANDON RD DAM, IL US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.