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.

Thunderstorm in Vicinity

93°F

34°C

Humidity 58%
Wind Speed Calm
Barometer 30.04 in (1016.5 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index106°F (41°C)
Last update 16 Aug 3:54 pm CDT
Extended Forecast for

3 Miles SE Golden Eagle IL

Heat Advisory August 16, 04:47pm until August 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 16, 04:47pm until August 18, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • This Afternoon

    High: 98 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Isolated showers and thunderstorms before 9pm. Partly cloudy, with a low around 76. Southeast wind 3 to 5 mph. Chance of precipitation is 20%.

    Low: 76 °F

    Isolated
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Isolated showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 98. Heat index values as high as 107. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 98 °F

    Sunny then
    Isolated
    T-storms

  • Sunday Night

    Sunday Night: Scattered showers and thunderstorms before 10pm. Partly cloudy, with a low around 76. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 76 °F

    Scattered
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 97. Calm wind becoming south around 5 mph in the afternoon.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 77.

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.

    High: 94 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Mostly sunny and hot, with a high near 98. Heat index values as high as 109. South wind around 6 mph. Chance of precipitation is 20%.
Tonight
Isolated showers and thunderstorms before 9pm. Partly cloudy, with a low around 76. Southeast wind 3 to 5 mph. Chance of precipitation is 20%.
Sunday
Isolated showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 98. Heat index values as high as 107. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
Scattered showers and thunderstorms before 10pm. Partly cloudy, with a low around 76. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Monday
Sunny and hot, with a high near 97. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 77.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 72.
Wednesday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 83. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 67.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 67.
Saturday
Sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Golden Eagle IL
 38.85°N 90.53°W (Elev. 427 ft)
Last Update:
4:16 pm CDT Aug 16, 2025
Forecast Valid:
4pm CDT Aug 16, 2025-6pm CDT Aug 23, 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