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Hazardous Weather Conditions

Current conditions at

University of Illinois - Willard (KCMI)

Lat: 40.03°NLon: 88.28°WElev: 741ft.

Fair

90°F

32°C

Humidity 58%
Wind Speed W 3 mph
Barometer 30.03 in (1016.0 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 17 Aug 4:53 pm CDT
Extended Forecast for

Monticello IL

Heat Advisory August 17, 04:59pm until August 17, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 17, 04:59pm until August 17, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 90 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 11pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 72. Light and variable wind becoming south southeast around 5 mph.

    Low: 72 °F

    Slight Chance
    T-storms then
    Patchy Fog

  • Monday

    Monday: A slight chance of showers, with thunderstorms also possible after 10am. Patchy fog before 8am. Otherwise, partly sunny, with a high near 90. Heat index values as high as 101. East southeast wind around 7 mph becoming south in the afternoon. Chance of precipitation is 20%.

    High: 90 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Monday Night

    Monday Night: Mostly clear, with a low around 72. South southeast wind around 6 mph.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. South wind 6 to 8 mph becoming west in the afternoon.

    High: 89 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 70. North wind around 6 mph.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84. North northeast wind 7 to 13 mph, with gusts as high as 16 mph.

    High: 84 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 90. Calm wind.
Tonight
A 20 percent chance of showers and thunderstorms before 11pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 72. Light and variable wind becoming south southeast around 5 mph.
Monday
A slight chance of showers, with thunderstorms also possible after 10am. Patchy fog before 8am. Otherwise, partly sunny, with a high near 90. Heat index values as high as 101. East southeast wind around 7 mph becoming south in the afternoon. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 72. South southeast wind around 6 mph.
Tuesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. South wind 6 to 8 mph becoming west in the afternoon.
Tuesday Night
Partly cloudy, with a low around 70. North wind around 6 mph.
Wednesday
Mostly sunny, with a high near 84. North northeast wind 7 to 13 mph, with gusts as high as 16 mph.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Monticello IL
 40.03°N 88.58°W (Elev. 650 ft)
Last Update:
4:40 pm CDT Aug 17, 2025
Forecast Valid:
4pm CDT Aug 17, 2025-6pm CDT Aug 24, 2025
 
Forecast Discussion
 
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Additional Resources

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