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.

Overcast

32°F

0°C

Humidity 99%
Wind Speed N 18 G 23 mph
Barometer 30.11 in
Dewpoint 32°F (0°C)
Visibility 2.00 mi
Wind Chill21°F (-6°C)
Last update 7 Dec 10:35 am CST
Extended Forecast for

South Jacksonville IL

  • Today

    Today: Cloudy, with a temperature falling to around 27 by 4pm. North wind 11 to 15 mph, with gusts as high as 25 mph.

    High: 34 °F⇓

    Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 15. North wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 15 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 29. Calm wind becoming south around 5 mph in the afternoon.

    High: 29 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a temperature falling to near 22 by 9pm, then rising to around 30 during the remainder of the night. South wind 6 to 14 mph, with gusts as high as 23 mph.

    Low: 22 °F⇑

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 45. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.

    High: 45 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38. South southwest wind 14 to 18 mph becoming west after midnight. Winds could gust as high as 30 mph.

    Low: 38 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 41. West wind 10 to 18 mph, with gusts as high as 29 mph.

    High: 41 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of snow. Mostly cloudy, with a high near 31.

    High: 31 °F

    Chance Snow

Detailed Forecast

Today
Cloudy, with a temperature falling to around 27 by 4pm. North wind 11 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, with a low around 15. North wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 20 mph.
Monday
Mostly sunny, with a high near 29. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a temperature falling to near 22 by 9pm, then rising to around 30 during the remainder of the night. South wind 6 to 14 mph, with gusts as high as 23 mph.
Tuesday
Partly sunny, with a high near 45. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 38. South southwest wind 14 to 18 mph becoming west after midnight. Winds could gust as high as 30 mph.
Wednesday
Mostly cloudy, with a high near 41. West wind 10 to 18 mph, with gusts as high as 29 mph.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
A 30 percent chance of snow. Mostly cloudy, with a high near 31.
Thursday Night
Mostly cloudy, with a low around 11.
Friday
Partly sunny, with a high near 19.
Friday Night
Mostly cloudy, with a low around 2.
Saturday
Partly sunny, with a high near 16.
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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:
4:57 am CST Dec 7, 2025
Forecast Valid:
10am CST Dec 7, 2025-6pm CST Dec 13, 2025
 
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