Current conditions at

Jacksonville Municipal Airport (KIJX)

Lat: 39.77°NLon: 90.24°WElev: 614ft.

Thunderstorm

72°F

22°C

Humidity 100%
Wind Speed NE 10 mph
Barometer 30.13 in
Dewpoint 72°F (22°C)
Visibility 2.00 mi
Last update 15 Aug 5:15 am CDT
Extended Forecast for

Jacksonville IL

Flood Advisory until August 15, 08:45am
Click here for hazard details and duration
Flood Advisory
  •  
    Flood Advisory until August 15, 08:45am

    NOW until 8:45am Sat

    Flood Advisory

  • Overnight

    Low: 72 °F

    Chance
    T-storms

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms between 8am and 11am.  High near 90. Heat index values as high as 103. North wind 7 to 10 mph becoming south in the afternoon. Winds could gust as high as 16 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Showers then
    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly after 2am.  Partly cloudy, with a low around 74. Light and variable wind becoming northwest 5 to 7 mph after midnight.

    Low: 74 °F

    Partly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: Partly sunny, with a high near 88. West northwest wind 5 to 9 mph.

    High: 88 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 67. North northwest wind 3 to 8 mph.

    Low: 67 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 84. North wind 3 to 5 mph.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Overnight
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. East wind around 7 mph.
Saturday
Showers and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms between 8am and 11am. High near 90. Heat index values as high as 103. North wind 7 to 10 mph becoming south in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 74. Light and variable wind becoming northwest 5 to 7 mph after midnight.
Sunday
Partly sunny, with a high near 88. West northwest wind 5 to 9 mph.
Sunday Night
Partly cloudy, with a low around 67. North northwest wind 3 to 8 mph.
Monday
Mostly sunny, with a high near 84. North wind 3 to 5 mph.
Monday Night
Mostly clear, with a low around 63. Calm wind.
Tuesday
Sunny, with a high near 86.
Tuesday Night
A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71.
Wednesday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
Partly sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
Jacksonville IL
 39.73°N 90.24°W (Elev. 607 ft)
4:36 am CDT Aug 15, 2026
5am CDT Aug 15, 2026-6pm CDT Aug 21, 2026
 
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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