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.

Mostly Cloudy

11°F

-12°C

Humidity 61%
Wind Speed Calm
Barometer 30.44 in (1031.5 mb)
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Last update 20 Jan 1:54 am CST
Extended Forecast for

3 Miles NNW Elsberry MO

  • Overnight

    Overnight: Partly cloudy, with a low around 12. Light south wind.

    Low: 12 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36. South wind 3 to 8 mph.

    High: 36 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 31. South wind 7 to 11 mph becoming southwest after midnight. Winds could gust as high as 26 mph.

    Low: 31 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 41. West wind 7 to 10 mph, with gusts as high as 23 mph.

    High: 41 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 21. Southwest wind 5 to 7 mph becoming northwest after midnight.

    Low: 21 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 7.

    Low: 7 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 15.

    High: 15 °F

    Cold

  • Friday Night

    Friday Night: A 20 percent chance of snow. Mostly cloudy, with a low around -2.

    Low: -2 °F

    Slight Chance
    Snow

Detailed Forecast

Overnight
Partly cloudy, with a low around 12. Light south wind.
Tuesday
Mostly sunny, with a high near 36. South wind 3 to 8 mph.
Tuesday Night
Increasing clouds, with a low around 31. South wind 7 to 11 mph becoming southwest after midnight. Winds could gust as high as 26 mph.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 41. West wind 7 to 10 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 21. Southwest wind 5 to 7 mph becoming northwest after midnight.
Thursday
Mostly sunny, with a high near 35.
Thursday Night
Mostly cloudy, with a low around 7.
Friday
Mostly cloudy and cold, with a high near 15.
Friday Night
A 20 percent chance of snow. Mostly cloudy, with a low around -2.
Saturday
A 20 percent chance of snow. Mostly cloudy and cold, with a high near 12.
Saturday Night
A 30 percent chance of snow. Partly cloudy, with a low around 2.
Sunday
Mostly sunny, with a high near 21.
Sunday Night
Mostly clear, with a low around 9.
Monday
Sunny, with a high near 32.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Elsberry MO
 39.21°N 90.8°W (Elev. 509 ft)
Last Update:
10:51 pm CST Jan 19, 2026
Forecast Valid:
2am CST Jan 20, 2026-6pm CST Jan 26, 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