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

96°F

36°C

Humidity 52%
Wind Speed N 5 mph
Barometer 30.04 in (1016.6 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index109°F (43°C)
Last update 16 Aug 2:54 pm CDT
Extended Forecast for

3 Miles E Eldred IL

Heat Advisory August 16, 03:02pm until August 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 16, 03:02pm until August 18, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • This Afternoon

    High: 94 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Isolated showers and thunderstorms before 8pm. Mostly clear, with a low around 75. South wind 3 to 5 mph. Chance of precipitation is 20%.

    Low: 75 °F

    Isolated
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 95. Heat index values as high as 103. South wind 3 to 5 mph.

    High: 95 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Isolated showers and thunderstorms before 10pm. Mostly clear, with a low around 74. Light southeast wind. Chance of precipitation is 20%.

    Low: 74 °F

    Isolated
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 95. South wind 3 to 6 mph.

    High: 95 °F

    Sunny

  • Monday Night

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

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.

    High: 92 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 71. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms after 4pm. Sunny, with a high near 94. Heat index values as high as 107. Southwest wind 3 to 6 mph. Chance of precipitation is 20%.
Tonight
Isolated showers and thunderstorms before 8pm. Mostly clear, with a low around 75. South wind 3 to 5 mph. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 95. Heat index values as high as 103. South wind 3 to 5 mph.
Sunday Night
Isolated showers and thunderstorms before 10pm. Mostly clear, with a low around 74. Light southeast wind. Chance of precipitation is 20%.
Monday
Sunny, with a high near 95. South wind 3 to 6 mph.
Monday Night
Mostly clear, with a low around 75.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Tuesday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 71. Chance of precipitation is 30%.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 81.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Eldred IL
 39.29°N 90.49°W (Elev. 584 ft)
Last Update:
2:36 pm CDT Aug 16, 2025
Forecast Valid:
3pm CDT Aug 16, 2025-6pm CDT Aug 23, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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