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.

Fog/Mist

48°F

9°C

Humidity 96%
Wind Speed E 5 mph
Barometer 30.13 in (1020.3 mb)
Dewpoint 47°F (8°C)
Visibility 3.00 mi
Wind Chill46°F (8°C)
Last update 19 Nov 4:54 am CST
Extended Forecast for

4 Miles NNE Saint Charles MO

  • Today

    Today: Mostly cloudy, with a high near 57. Light and variable wind.

    High: 57 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 47. Calm wind becoming southeast around 5 mph after midnight.

    Low: 47 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain. High near 60. Southeast wind 5 to 8 mph. Chance of precipitation is 80%.

    High: 60 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm. Cloudy, with a low around 53. Southeast wind around 5 mph becoming calm. Chance of precipitation is 70%.

    Low: 53 °F

    Rain Likely

  • Friday

    Friday: Rain, with thunderstorms also possible after 3pm. High near 62. East wind 6 to 9 mph. Chance of precipitation is 90%.

    High: 62 °F

    Rain

  • Friday Night

    Friday Night: A 50 percent chance of rain before midnight. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 57. Light and variable wind.
Tonight
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 47. Calm wind becoming southeast around 5 mph after midnight.
Thursday
Rain. High near 60. Southeast wind 5 to 8 mph. Chance of precipitation is 80%.
Thursday Night
Rain likely and possibly a thunderstorm. Cloudy, with a low around 53. Southeast wind around 5 mph becoming calm. Chance of precipitation is 70%.
Friday
Rain, with thunderstorms also possible after 3pm. High near 62. East wind 6 to 9 mph. Chance of precipitation is 90%.
Friday Night
A 50 percent chance of rain before midnight. Mostly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 61.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 64.
Sunday Night
Partly cloudy, with a low around 43.
Monday
A 20 percent chance of rain. Partly sunny, with a high near 61.
Monday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 44.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Saint Charles MO
 38.85°N 90.51°W (Elev. 436 ft)
Last Update:
3:16 am CST Nov 19, 2025
Forecast Valid:
5am CST Nov 19, 2025-6pm CST Nov 25, 2025
 
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