Jacksonville, IL Weather - Tomorrow’s Forecast

Saturday

Hot

High:
98°F

Sunny and hot, with a high near 98. Heat index values as high as 106. Calm wind becoming northwest around 6 mph in the afternoon.

Saturday Night

Mostly clear

Overnight low:
70°F

Mostly clear, with a low around 70. North wind 5 to 7 mph becoming light and variable.