National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Overcast

73°F

23°C

Humidity 96%
Wind Speed E 5 mph
Barometer 29.89 in (1011.6 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 27 Jun 12:54 am CDT
Extended Forecast for

3 Miles NE Foley MO

  • Overnight

    Overnight: A 20 percent chance of showers. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: A slight chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 86. Calm wind. Chance of precipitation is 20%.

    High: 86 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms, mainly between 10pm and 5am. Increasing clouds, with a low around 72. Light southeast wind.

    Low: 72 °F

    Chance
    T-storms

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 95. Heat index values as high as 110. South wind 5 to 9 mph, with gusts as high as 20 mph.

    High: 95 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75. South wind 5 to 8 mph.

    Low: 75 °F

    Mostly Clear

  • Monday

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

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 99.

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 76.

    Low: 76 °F

    Clear

Detailed Forecast

Overnight
A 20 percent chance of showers. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 66. Calm wind.
Saturday
A slight chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 86. Calm wind. Chance of precipitation is 20%.
Saturday Night
A 40 percent chance of showers and thunderstorms, mainly between 10pm and 5am. Increasing clouds, with a low around 72. Light southeast wind.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 95. Heat index values as high as 110. South wind 5 to 9 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 75. South wind 5 to 8 mph.
Monday
Sunny and hot, with a high near 97.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Sunny and hot, with a high near 99.
Tuesday Night
Clear, with a low around 76.
Wednesday
Sunny and hot, with a high near 98.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Sunny, with a high near 96.
Thursday Night
Mostly clear, with a low around 76.
Friday
Sunny, with a high near 96.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Foley MO
 39.07°N 90.7°W (Elev. 430 ft)
Last Update:
1:21 am CDT Jun 27, 2026
Forecast Valid:
1am CDT Jun 27, 2026-6pm CDT Jul 3, 2026
 
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