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

Jacksonville Municipal Airport (KIJX)

Lat: 39.77°NLon: 90.24°WElev: 614ft.

Mostly Cloudy

74°F

23°C

Humidity 75%
Wind Speed NE 3 mph
Barometer 29.89 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 2 Aug 11:35 am CDT
Extended Forecast for

Jacksonville IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 81. North wind around 11 mph, with gusts as high as 18 mph.

    High: 81 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 61. North wind 3 to 8 mph.

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 83. Light and variable wind.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62. East southeast wind around 5 mph.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86. South southeast wind around 5 mph becoming calm in the afternoon.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 64. Light southeast wind.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 86. South wind 3 to 5 mph.

    High: 86 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm. Partly sunny, with a high near 83. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 81. North wind around 11 mph, with gusts as high as 18 mph.
Tonight
Mostly clear, with a low around 61. North wind 3 to 8 mph.
Monday
Mostly sunny, with a high near 83. Light and variable wind.
Monday Night
Mostly clear, with a low around 62. East southeast wind around 5 mph.
Tuesday
Sunny, with a high near 86. South southeast wind around 5 mph becoming calm in the afternoon.
Tuesday Night
Mostly clear, with a low around 64. Light southeast wind.
Wednesday
Mostly sunny, with a high near 86. South wind 3 to 5 mph.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Thursday
Showers likely and possibly a thunderstorm before 1pm. Partly sunny, with a high near 83. Chance of precipitation is 60%.
Thursday Night
Partly cloudy, with a low around 65.
Friday
A chance of showers. Partly sunny, with a high near 85.
Friday Night
Partly cloudy, with a low around 67.
Saturday
Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Jacksonville IL
 39.73°N 90.24°W (Elev. 607 ft)
Last Update:
10:40 am CDT Aug 2, 2026
Forecast Valid:
12pm CDT Aug 2, 2026-6pm CDT Aug 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