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.

Fair

84°F

29°C

Humidity 22%
Wind Speed NW 16 G 25 mph
Barometer 29.83 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 20 Mar 3:55 pm CDT
Extended Forecast for

Jacksonville IL

  • Tonight

    Tonight: Partly cloudy, with a low around 49. Northwest wind 5 to 8 mph becoming light and variable after midnight. Winds could gust as high as 15 mph.

    Low: 49 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 81. East southeast wind 5 to 8 mph becoming west southwest in the afternoon.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62. South southwest wind 6 to 13 mph, with gusts as high as 22 mph.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 80. South southwest wind 10 to 17 mph becoming north in the afternoon. Winds could gust as high as 26 mph.

    High: 80 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 36. Breezy, with a north wind 13 to 20 mph, with gusts as high as 30 mph.

    Low: 36 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 55. North northeast wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 38. East northeast wind 5 to 7 mph becoming southeast after midnight.

    Low: 38 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 49. Northwest wind 5 to 8 mph becoming light and variable after midnight. Winds could gust as high as 15 mph.
Saturday
Sunny, with a high near 81. East southeast wind 5 to 8 mph becoming west southwest in the afternoon.
Saturday Night
Mostly clear, with a low around 62. South southwest wind 6 to 13 mph, with gusts as high as 22 mph.
Sunday
Partly sunny, with a high near 80. South southwest wind 10 to 17 mph becoming north in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 36. Breezy, with a north wind 13 to 20 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 55. North northeast wind 7 to 10 mph, with gusts as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 38. East northeast wind 5 to 7 mph becoming southeast after midnight.
Tuesday
Partly sunny, with a high near 60.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
Mostly cloudy, with a high near 64.
Wednesday Night
Mostly cloudy, with a low around 50.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 36.
Friday
Partly sunny, with a high near 50.
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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:
3:36 pm CDT Mar 20, 2026
Forecast Valid:
4pm CDT Mar 20, 2026-6pm CDT Mar 27, 2026
 
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Additional Resources

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Chance of Precipitation