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

Hazardous Weather Conditions

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

94°F

34°C

Humidity 49%
Wind Speed SW 16 mph
Barometer 29.90 in (1012.0 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 21 Jun 2:54 pm CDT
Extended Forecast for

2 Miles E Fieldon IL

Extreme Heat Warning June 21, 03:52pm until June 24, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 21, 03:52pm until June 24, 09:00pm

    NOW until 9:00pm Tue

    Extreme Heat Warning

  • Tonight

    Low: 76 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 94. Heat index values as high as 101. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 94 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75. South wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 95. Heat index values as high as 100. South wind 6 to 9 mph.

    High: 95 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 75. South wind 5 to 7 mph.

    Low: 75 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.

    High: 95 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
Clear, with a low around 76. South wind 7 to 14 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 94. Heat index values as high as 101. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 75. South wind 7 to 10 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 95. Heat index values as high as 100. South wind 6 to 9 mph.
Monday Night
Partly cloudy, with a low around 75. South wind 5 to 7 mph.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
Tuesday Night
Partly cloudy, with a low around 74.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92.
Wednesday Night
Partly cloudy, with a low around 75.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 93.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Fieldon IL
 39.11°N 90.47°W (Elev. 640 ft)
Last Update:
2:21 pm CDT Jun 21, 2025
Forecast Valid:
3pm CDT Jun 21, 2025-6pm CDT Jun 28, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation