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.

Partly Cloudy

87°F

31°C

Humidity 42%
Wind Speed SE 6 mph
Barometer 30.17 in (1021.0 mb)
Dewpoint 61°F (16°C)
Visibility 9.00 mi
Heat Index87°F (31°C)
Last update 3 Oct 1:54 pm CDT
Extended Forecast for

4 Miles NNE Saint Charles MO

  • This Afternoon

    This Afternoon: Sunny, with a high near 90. South wind around 6 mph.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 63. South wind around 6 mph.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 87. Light south wind increasing to 6 to 11 mph in the morning.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 60. South wind 6 to 9 mph.

    Low: 60 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 88. South wind 6 to 14 mph.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 86.

    High: 86 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 63.

    Low: 63 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 79.

    High: 79 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 90. South wind around 6 mph.
Tonight
Mostly clear, with a low around 63. South wind around 6 mph.
Saturday
Sunny, with a high near 87. Light south wind increasing to 6 to 11 mph in the morning.
Saturday Night
Clear, with a low around 60. South wind 6 to 9 mph.
Sunday
Sunny, with a high near 88. South wind 6 to 14 mph.
Sunday Night
Mostly clear, with a low around 63.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 86.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 63.
Tuesday
A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 79.
Tuesday Night
Mostly cloudy, with a low around 56.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Saint Charles MO
 38.85°N 90.51°W (Elev. 436 ft)
Last Update:
2:36 pm CDT Oct 3, 2025
Forecast Valid:
2pm CDT Oct 3, 2025-6pm CDT Oct 9, 2025
 
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