Current conditions at

Jacksonville Municipal Airport (KIJX)

Lat: 39.77°NLon: 90.24°WElev: 614ft.

Fair

62°F

17°C

Humidity 100%
Wind Speed E 6 mph
Barometer 29.93 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 21 Jun 1:55 am CDT
Extended Forecast for

South Jacksonville IL

Flood Watch June 21, 07:00am until June 22, 01:00am
Click here for hazard details and duration
Flood Watch
  • Overnight

    Overnight: Mostly cloudy, with a low around 61. East southeast wind 5 to 7 mph.

    Low: 61 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 10am. Some of the storms could produce heavy rainfall.  High near 76. East southeast wind 9 to 15 mph becoming south in the afternoon. Winds could gust as high as 24 mph.  Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    High: 76 °F

    Showers then
    Heavy Rain

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 3am.  Mostly cloudy, with a low around 58. Northwest wind around 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 58 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Monday

    Monday: Mostly cloudy, with a high near 75. North wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 75 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 55. Northeast wind 3 to 6 mph.

    Low: 55 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 78. Light east northeast wind.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 61. East southeast wind 5 to 7 mph.
Sunday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 10am. Some of the storms could produce heavy rainfall. High near 76. East southeast wind 9 to 15 mph becoming south in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Sunday Night
Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 3am. Mostly cloudy, with a low around 58. Northwest wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Mostly cloudy, with a high near 75. North wind 10 to 13 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 55. Northeast wind 3 to 6 mph.
Tuesday
Sunny, with a high near 78. Light east northeast wind.
Tuesday Night
Mostly clear, with a low around 59. Calm wind.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Partly cloudy, with a low around 61.
Thursday
Mostly sunny, with a high near 80.
Thursday Night
Partly cloudy, with a low around 59.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
South Jacksonville IL
 39.7°N 90.24°W (Elev. 650 ft)
1:26 am CDT Jun 21, 2026
2am CDT Jun 21, 2026-6pm CDT Jun 27, 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