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

86°F

30°C

Humidity 69%
Wind Speed NE 12 mph
Barometer 30.05 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 18 Sep 5:15 pm CDT
Extended Forecast for

Jacksonville IL

  • Tonight

    Tonight: Partly cloudy, with a low around 73. East wind 6 to 8 mph becoming south southeast after midnight. Winds could gust as high as 15 mph.

    Low: 73 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 93. West southwest wind 7 to 9 mph, with gusts as high as 16 mph.

    High: 93 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms between 3am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 69. South wind 5 to 7 mph becoming northwest after midnight. Winds could gust as high as 16 mph. Chance of precipitation is 30%.

    Low: 69 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 85. Calm wind becoming north 5 to 7 mph in the morning. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 61. Northeast wind 7 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 61 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: Showers likely before 7am, then showers likely and possibly a thunderstorm between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 71. Northeast wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 71 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 55. Northeast wind 8 to 13 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 68.

    High: 68 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 73. East wind 6 to 8 mph becoming south southeast after midnight. Winds could gust as high as 15 mph.
Saturday
Partly sunny, with a high near 93. West southwest wind 7 to 9 mph, with gusts as high as 16 mph.
Saturday Night
A slight chance of showers and thunderstorms between 3am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 69. South wind 5 to 7 mph becoming northwest after midnight. Winds could gust as high as 16 mph. Chance of precipitation is 30%.
Sunday
Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 85. Calm wind becoming north 5 to 7 mph in the morning. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 61. Northeast wind 7 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
Showers likely before 7am, then showers likely and possibly a thunderstorm between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 71. Northeast wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 55. Northeast wind 8 to 13 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 68.
Tuesday Night
Mostly cloudy, with a low around 51.
Wednesday
Mostly sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 53.
Thursday
Mostly sunny, with a high near 73.
Thursday Night
Partly cloudy, with a low around 55.
Friday
Mostly sunny, with a high near 74.
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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:
4:36 pm CDT Sep 18, 2026
Forecast Valid:
5pm CDT Sep 18, 2026-6pm CDT Sep 25, 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