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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Hazardous Weather Conditions

Current conditions at

University of Illinois - Willard (KCMI)

Lat: 40.03°NLon: 88.28°WElev: 741ft.

Fair

73°F

23°C

Humidity 96%
Wind Speed E 3 mph
Barometer 30.22 in (1022.9 mb)
Dewpoint 72°F (22°C)
Visibility 7.00 mi
Last update 17 Sep 12:53 am CDT
Extended Forecast for

Fairmount IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 72. Light southeast wind.

    Low: 72 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms, mainly between 8am and noon. Partly sunny, with a high near 93. Heat index values as high as 101. Calm wind becoming northwest around 6 mph in the morning.

    High: 93 °F

    Slight Chance
    T-storms then
    Partly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 11pm. Mostly cloudy, with a low around 68. North northeast wind 3 to 5 mph.

    Low: 68 °F

    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers before 9am. Partly sunny, with a high near 85. Northeast wind 3 to 6 mph.

    High: 85 °F

    Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 67. East northeast wind 6 to 9 mph becoming southeast after midnight.

    Low: 67 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 93. South southeast wind 7 to 9 mph becoming west southwest in the afternoon. Winds could gust as high as 16 mph.

    High: 93 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South southwest wind around 5 mph. Chance of precipitation is 50%.

    Low: 70 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 85.

    High: 85 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.

    Low: 62 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 72. Light southeast wind.
Thursday
A 20 percent chance of showers and thunderstorms, mainly between 8am and noon. Partly sunny, with a high near 93. Heat index values as high as 101. Calm wind becoming northwest around 6 mph in the morning.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after 11pm. Mostly cloudy, with a low around 68. North northeast wind 3 to 5 mph.
Friday
A 30 percent chance of showers before 9am. Partly sunny, with a high near 85. Northeast wind 3 to 6 mph.
Friday Night
Partly cloudy, with a low around 67. East northeast wind 6 to 9 mph becoming southeast after midnight.
Saturday
Mostly sunny, with a high near 93. South southeast wind 7 to 9 mph becoming west southwest in the afternoon. Winds could gust as high as 16 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South southwest wind around 5 mph. Chance of precipitation is 50%.
Sunday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 85.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.
Monday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78.
Monday Night
A chance of showers. Mostly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
Mostly sunny, with a high near 78.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fairmount IL
 40.04°N 87.83°W (Elev. 653 ft)
Last Update:
1:26 am CDT Sep 17, 2026
Forecast Valid:
1am CDT Sep 17, 2026-6pm CDT Sep 23, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation