National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Jacksonville Municipal Airport (KIJX)

Lat: 39.77°NLon: 90.24°WElev: 614ft.

Fair

79°F

26°C

Humidity 58%
Wind Speed S 7 mph
Barometer 29.98 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 30 Aug 10:35 pm CDT
Extended Forecast for

3 Miles SE South Jacksonville IL

Heat Advisory August 31, 01:00pm until August 31, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Mostly clear, with a low around 71. South wind around 10 mph, with gusts as high as 18 mph.

    Low: 71 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 96. Heat index values as high as 101. South southwest wind 9 to 11 mph, with gusts as high as 18 mph.

    High: 96 °F

    Hot

  • Monday Night

    Monday Night: Partly cloudy, with a low around 75. South wind 6 to 9 mph, with gusts as high as 16 mph.

    Low: 75 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny and hot, with a high near 99. Heat index values as high as 104. Southwest wind 6 to 8 mph, with gusts as high as 15 mph.

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 77. South wind 5 to 8 mph, with gusts as high as 15 mph.

    Low: 77 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 98. Southwest wind 7 to 9 mph, with gusts as high as 15 mph.

    High: 98 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 77. South wind 5 to 7 mph.

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 1am. Mostly clear, with a low around 74.

    Low: 74 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 71. South wind around 10 mph, with gusts as high as 18 mph.
Monday
Sunny and hot, with a high near 96. Heat index values as high as 101. South southwest wind 9 to 11 mph, with gusts as high as 18 mph.
Monday Night
Partly cloudy, with a low around 75. South wind 6 to 9 mph, with gusts as high as 16 mph.
Tuesday
Sunny and hot, with a high near 99. Heat index values as high as 104. Southwest wind 6 to 8 mph, with gusts as high as 15 mph.
Tuesday Night
Clear, with a low around 77. South wind 5 to 8 mph, with gusts as high as 15 mph.
Wednesday
Sunny and hot, with a high near 98. Southwest wind 7 to 9 mph, with gusts as high as 15 mph.
Wednesday Night
Mostly clear, with a low around 77. South wind 5 to 7 mph.
Thursday
Sunny, with a high near 94.
Thursday Night
A 30 percent chance of showers after 1am. Mostly clear, with a low around 74.
Friday
Sunny, with a high near 93.
Friday Night
Mostly clear, with a low around 70.
Saturday
Sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 68.
Sunday
Sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE South Jacksonville IL
 39.68°N 90.18°W (Elev. 650 ft)
Last Update:
10:36 pm CDT Aug 30, 2026
Forecast Valid:
10pm CDT Aug 30, 2026-6pm CDT Sep 6, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation