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

79°F

26°C

Humidity 94%
Wind Speed SW 5 mph
Barometer 29.83 in (1009.5 mb)
Dewpoint 77°F (25°C)
Visibility 8.00 mi
Heat Index83°F (28°C)
Last update 27 Jul 2:54 am CDT
Extended Forecast for

3 Miles SSE Golden Eagle IL

Extreme Heat Warning July 27, 03:56am until July 27, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 27, 03:56am until July 27, 09:00pm

    NOW until 9:00pm Mon

    Extreme Heat Warning

  • Overnight

    Low: 79 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. Heat index values as high as 114. Light south wind becoming southwest 5 to 9 mph in the morning.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 80. Southwest wind 5 to 7 mph.

    Low: 80 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 92. Heat index values as high as 102. North wind 5 to 9 mph.

    High: 92 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 71. North wind 3 to 8 mph.

    Low: 71 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 79. Light south wind.
Monday
Sunny and hot, with a high near 99. Heat index values as high as 114. Light south wind becoming southwest 5 to 9 mph in the morning.
Monday Night
Mostly clear, with a low around 80. Southwest wind 5 to 7 mph.
Tuesday
Mostly sunny, with a high near 92. Heat index values as high as 102. North wind 5 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 71. North wind 3 to 8 mph.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 69.
Thursday
Mostly sunny, with a high near 90.
Thursday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 84. Chance of precipitation is 50%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 68.
Sunday
Sunny, with a high near 86.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Golden Eagle IL
 38.85°N 90.53°W (Elev. 427 ft)
Last Update:
2:36 am CDT Jul 27, 2026
Forecast Valid:
3am CDT Jul 27, 2026-6pm CDT Aug 2, 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