National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Jacksonville Municipal Airport (KIJX)

Lat: 39.77°NLon: 90.24°WElev: 614ft.

Fair

91°F

33°C

Humidity 58%
Wind Speed S 8 mph
Barometer 29.95 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 18 Aug 5:30 pm CDT
Extended Forecast for

2 Miles S Chapin IL

Heat Advisory August 18, 06:00pm until August 18, 08:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory August 18, 06:00pm until August 18, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • Tonight

    Low: 72 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Partly sunny, with a high near 89. Light and variable wind becoming north northwest 5 to 9 mph in the morning.

    High: 89 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 70. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84. North northeast wind 6 to 9 mph, with gusts as high as 15 mph.

    High: 84 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 64. North northeast wind 5 to 8 mph.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 84. Northeast wind around 6 mph.

    High: 84 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63. Northeast wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 72. South wind 5 to 8 mph.
Tuesday
A 20 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Partly sunny, with a high near 89. Light and variable wind becoming north northwest 5 to 9 mph in the morning.
Tuesday Night
A slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 70. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 84. North northeast wind 6 to 9 mph, with gusts as high as 15 mph.
Wednesday Night
Mostly clear, with a low around 64. North northeast wind 5 to 8 mph.
Thursday
Mostly sunny, with a high near 84. Northeast wind around 6 mph.
Thursday Night
Mostly clear, with a low around 63. Northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 55.
Monday
Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Chapin IL
 39.73°N 90.41°W (Elev. 554 ft)
Last Update:
5:40 pm CDT Aug 18, 2025
Forecast Valid:
6pm CDT Aug 18, 2025-6pm CDT Aug 25, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation