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Frost dates for Aurora, Illinois

In a typical year, Aurora’s last spring frost lands around Apr 19 and the first fall frost around Oct 23, a growing season of about 187 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 5b.

Last spring frost and first fall frost odds for Aurora, Illinois
OddsLast spring frostFirst fall frost
10 percentApr 5Oct 9
50 percentApr 19Oct 23
90 percentMay 4Nov 3

A 10 percent year is an early year, a 90 percent year a late one. Frost-sensitive planting usually waits for the 90 percent side of the last-frost band.

Soil in Aurora is typically around 72°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.

Plantable now in Aurora

Timing comes from the same temperature engine the app uses, run against Aurora’s normals for today.

See the full what-to-plant lookup

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