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.

Partly Cloudy

78°F

26°C

Humidity 75%
Wind Speed SW 7 mph
Barometer 30.01 in
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 2 Sep 6:55 am CDT
Extended Forecast for

3 Miles SE South Jacksonville IL

Heat Advisory September 2, 07:10am until September 4, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 2, 07:10am until September 4, 07:00pm

    NOW until 7:00pm Fri

    Heat Advisory

  • Today

    High: 98 °F

    Hot

  • Tonight

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

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 97. Heat index values as high as 102. South southwest wind 7 to 9 mph, with gusts as high as 15 mph.

    High: 97 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77. South wind 3 to 6 mph.

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 96. South southwest wind around 6 mph.

    High: 96 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 74. Calm wind.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 95. Light and variable wind.

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

Detailed Forecast

Today
Sunny and hot, with a high near 98. Heat index values as high as 103. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Tonight
Mostly clear, with a low around 77. South wind 5 to 7 mph.
Thursday
Sunny and hot, with a high near 97. Heat index values as high as 102. South southwest wind 7 to 9 mph, with gusts as high as 15 mph.
Thursday Night
Mostly clear, with a low around 77. South wind 3 to 6 mph.
Friday
Sunny and hot, with a high near 96. South southwest wind around 6 mph.
Friday Night
Mostly clear, with a low around 74. Calm wind.
Saturday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 95. Light and variable wind.
Saturday Night
Partly cloudy, with a low around 72.
Sunday
Mostly sunny, with a high near 92.
Sunday Night
Partly cloudy, with a low around 68.
Labor Day
Mostly sunny, with a high near 89.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE South Jacksonville IL
 39.68°N 90.21°W (Elev. 646 ft)
Last Update:
6:36 am CDT Sep 2, 2026
Forecast Valid:
7am CDT Sep 2, 2026-6pm CDT Sep 8, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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