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

92°F

33°C

Humidity 62%
Wind Speed S 10 mph
Barometer 29.93 in (1012.7 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index106°F (41°C)
Last update 29 Jun 1:54 pm CDT
Extended Forecast for

4 Miles SSE Elsberry MO

Heat Advisory June 29, 02:31pm until July 3, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory June 29, 02:31pm until July 3, 10:00pm

    NOW until 10:00pm Fri

    Heat Advisory

  • This Afternoon

    High: 95 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 76. South wind 5 to 9 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97. Heat index values as high as 109. Southwest wind 5 to 9 mph.

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 76. South wind 3 to 6 mph.

    Low: 76 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97. South wind 3 to 8 mph.

    High: 97 °F

    Hot

  • Wednesday Night

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

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 76.

    Low: 76 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Partly sunny, with a high near 95. Heat index values as high as 109. South wind around 11 mph, with gusts as high as 22 mph.
Tonight
Partly cloudy, with a low around 76. South wind 5 to 9 mph, with gusts as high as 20 mph.
Tuesday
Sunny and hot, with a high near 97. Heat index values as high as 109. Southwest wind 5 to 9 mph.
Tuesday Night
Clear, with a low around 76. South wind 3 to 6 mph.
Wednesday
Sunny and hot, with a high near 97. South wind 3 to 8 mph.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Sunny and hot, with a high near 97.
Thursday Night
Partly cloudy, with a low around 76.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 95.
Friday Night
Partly cloudy, with a low around 75.
Independence Day
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 95.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Elsberry MO
 39.12°N 90.75°W (Elev. 440 ft)
Last Update:
2:06 pm CDT Jun 29, 2026
Forecast Valid:
2pm CDT Jun 29, 2026-6pm CDT Jul 5, 2026
 
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