Current conditions at

Jacksonville Municipal Airport (KIJX)

Lat: 39.77°NLon: 90.24°WElev: 614ft.

Overcast

70°F

21°C

Humidity 100%
Wind Speed E 9 mph
Barometer 29.98 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 26 Jun 9:35 am CDT
Extended Forecast for

Chapin IL

Flood Watch June 26, 09:43am until June 27, 01:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch June 26, 09:43am until June 27, 01:00pm

    NOW until 1:00pm Sat

    Flood Watch

  • Today

    High: 74 °F

    Showers

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 8pm.  Mostly cloudy, with a low around 63. Northeast wind 5 to 10 mph, with gusts as high as 17 mph.

    Low: 63 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 81. North northeast wind around 5 mph becoming southeast in the afternoon.

    High: 81 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Partly cloudy, with a low around 69. East southeast wind 6 to 10 mph, with gusts as high as 17 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: Sunny, with a high near 91. South wind 10 to 13 mph, with gusts as high as 21 mph.

    High: 91 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74. South wind 9 to 13 mph, with gusts as high as 21 mph.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 93. South wind 9 to 13 mph, with gusts as high as 21 mph.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Today
Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. High near 74. East wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tonight
A 30 percent chance of showers, mainly before 8pm. Mostly cloudy, with a low around 63. Northeast wind 5 to 10 mph, with gusts as high as 17 mph.
Saturday
Mostly cloudy, with a high near 81. North northeast wind around 5 mph becoming southeast in the afternoon.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 69. East southeast wind 6 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Sunny, with a high near 91. South wind 10 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 74. South wind 9 to 13 mph, with gusts as high as 21 mph.
Monday
Sunny, with a high near 93. South wind 9 to 13 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Sunny, with a high near 94.
Tuesday Night
Clear, with a low around 74.
Wednesday
Sunny, with a high near 94.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Sunny, with a high near 94.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Chapin IL
 39.78°N 90.44°W (Elev. 630 ft)
9:36 am CDT Jun 26, 2026
9am CDT Jun 26, 2026-6pm CDT Jul 2, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database