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Jacksonville, Illinois

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

Saturday Aug 29 night: a low around 70°F. Sunday Aug 30: a high near 93°F and a low around 73°F. Highs over the period run 91°F to 99°F.

National Weather Service forecast for Jacksonville, Illinois
DayHighLowPrecip
Saturday Aug 2970°
Sunday Aug 3093°73°
Monday Aug 3197°76°
Tuesday Sep 199°78°
Wednesday Sep 299°77°
Thursday Sep 397°74°
Friday Sep 493°72°
Saturday Sep 591°

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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