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Forreston, Illinois

Current conditions and the National Weather Service 7-day forecast for Forreston, Illinois — temperature, rain chance, wind, radar and active alerts.

Saturday Aug 29 night: a low around 68°F. Sunday Aug 30: a high near 85°F and a low around 71°F. The wettest day looks like Tuesday Sep 1, near 0.02 in. Highs over the period run 85°F to 91°F.

National Weather Service forecast for Forreston, Illinois
DayHighLowPrecip
Saturday Aug 2968°0.01 in
Sunday Aug 3085°71°
Monday Aug 3190°72°
Tuesday Sep 191°74°0.02 in
Wednesday Sep 291°70°
Thursday Sep 387°67°
Friday Sep 486°67°
Saturday Sep 585°

NOAA NWS NDFD 2.5 km, run 2026-08-29 23:00 UTC · days are local time in America/Chicago. The live page updates continuously.

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