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

66°F

19°C

Humidity 96%
Wind Speed NE 3 mph
Barometer 30.02 in (1015.9 mb)
Dewpoint 65°F (18°C)
Visibility 7.00 mi
Last update 20 Jun 5:54 am CDT
Extended Forecast for

3 Miles E Cave MO

Heat Advisory June 21, 12:00pm until June 24, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Mostly sunny, with a high near 91. Heat index values as high as 100. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 91 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 76. South wind around 9 mph, with gusts as high as 21 mph.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 94. Heat index values as high as 105. Southwest wind 9 to 14 mph, with gusts as high as 26 mph.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 75. South wind 6 to 9 mph, with gusts as high as 22 mph.

    Low: 75 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 94. South wind 6 to 10 mph, with gusts as high as 22 mph.

    High: 94 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 75.

    Low: 75 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 93. Chance of precipitation is 20%.

    High: 93 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 91. Heat index values as high as 100. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Tonight
Mostly clear, with a low around 76. South wind around 9 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 94. Heat index values as high as 105. Southwest wind 9 to 14 mph, with gusts as high as 26 mph.
Saturday Night
Clear, with a low around 75. South wind 6 to 9 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 94. South wind 6 to 10 mph, with gusts as high as 22 mph.
Sunday Night
Clear, with a low around 75.
Monday
Sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 74.
Tuesday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 93. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 73.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 92.
Wednesday Night
Mostly clear, with a low around 73.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 91.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Cave MO
 39.04°N 90.98°W (Elev. 636 ft)
Last Update:
5:37 am CDT Jun 20, 2025
Forecast Valid:
6am CDT Jun 20, 2025-6pm CDT Jun 26, 2025
 
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