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

32°F

0°C

Humidity 80%
Wind Speed N 12 mph
Barometer 30.34 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 23 Mar 6:15 am CDT
Extended Forecast for

South Jacksonville IL

  • Today

    Today: Mostly sunny, with a high near 52. North northeast wind 8 to 11 mph, with gusts as high as 23 mph.

    High: 52 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of sprinkles after 3am. Mostly cloudy, with a low around 36. East northeast wind 6 to 8 mph becoming southeast after midnight. Winds could gust as high as 17 mph.

    Low: 36 °F

    Slight Chance
    Sprinkles

  • Tuesday

    Tuesday: Mostly sunny, with a high near 60. South wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 60 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 40. South southeast wind 6 to 8 mph, with gusts as high as 16 mph.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. South wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 57. South wind around 10 mph, with gusts as high as 18 mph.

    Low: 57 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. Southwest wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 86 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm before 1am, then a chance of rain. Mostly cloudy, with a low around 39. Chance of precipitation is 70%.

    Low: 39 °F

    Rain Likely

  • Friday

    Friday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 52. North northeast wind 8 to 11 mph, with gusts as high as 23 mph.
Tonight
A slight chance of sprinkles after 3am. Mostly cloudy, with a low around 36. East northeast wind 6 to 8 mph becoming southeast after midnight. Winds could gust as high as 17 mph.
Tuesday
Mostly sunny, with a high near 60. South wind 8 to 11 mph, with gusts as high as 18 mph.
Tuesday Night
Partly cloudy, with a low around 40. South southeast wind 6 to 8 mph, with gusts as high as 16 mph.
Wednesday
Mostly sunny, with a high near 74. South wind 7 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 57. South wind around 10 mph, with gusts as high as 18 mph.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. Southwest wind 9 to 15 mph, with gusts as high as 23 mph.
Thursday Night
Rain likely and possibly a thunderstorm before 1am, then a chance of rain. Mostly cloudy, with a low around 39. Chance of precipitation is 70%.
Friday
Partly sunny, with a high near 50.
Friday Night
Mostly clear, with a low around 28.
Saturday
Sunny, with a high near 55.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Partly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Jacksonville IL
 39.7°N 90.24°W (Elev. 650 ft)
Last Update:
4:36 am CDT Mar 23, 2026
Forecast Valid:
6am CDT Mar 23, 2026-6pm CDT Mar 29, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation