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Joliet, IL planting calendar

When to plant vegetables in Joliet, IL (USDA hardiness zone 6a). Typical last spring frost around Apr 19, 2027 (±13 days year to year), first fall frost around Oct 25, 2027 (±10 days).

Playing it safe? Spring frost holds off until about May 5, 2027 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

These dates are typical for the whole city. Enter your ZIP for frost dates from the station nearest you:

Month by month in Joliet, IL

January

February

March

April

May

September

Understand your frost dates

More Illinois planting calendars

ZIP codes in Joliet

60431, 60432, 60433, 60435, 60436

Where these dates come from

Frost dates for Joliet, ILare NOAA 1991–2020 climate normals from a station representative of the area, which covers 5 ZIP codes. Individual ZIP codes within it can run earlier or later.

Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.