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.

Fair

31°F

-1°C

Humidity 79%
Wind Speed Calm
Barometer 30.10 in (1019.4 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 12 Jan 9:54 pm CST
Extended Forecast for

4 Miles ENE Moscow Mills MO

  • Tonight

    Tonight: Mostly clear, with a low around 38. Calm wind becoming southwest 5 to 7 mph after midnight. Winds could gust as high as 20 mph.

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 59. West wind 7 to 13 mph, with gusts as high as 28 mph.

    High: 59 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain, mainly before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 35. West wind 8 to 13 mph, with gusts as high as 22 mph.

    Low: 35 °F

    Chance Rain
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a temperature rising to near 40 by noon, then falling to around 32 during the remainder of the day. Breezy, with a northwest wind 14 to 20 mph, with gusts as high as 33 mph.

    High: 40 °F⇓

    Mostly Cloudy
    then Mostly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 17. North wind 7 to 14 mph, with gusts as high as 24 mph.

    Low: 17 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of rain and snow after noon. Mostly cloudy, with a high near 41. Chance of precipitation is 20%.

    High: 41 °F

    Partly Sunny
    then Slight
    Chance
    Rain/Snow

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 38. Calm wind becoming southwest 5 to 7 mph after midnight. Winds could gust as high as 20 mph.
Tuesday
Increasing clouds, with a high near 59. West wind 7 to 13 mph, with gusts as high as 28 mph.
Tuesday Night
A 30 percent chance of rain, mainly before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 35. West wind 8 to 13 mph, with gusts as high as 22 mph.
Wednesday
Partly sunny, with a temperature rising to near 40 by noon, then falling to around 32 during the remainder of the day. Breezy, with a northwest wind 14 to 20 mph, with gusts as high as 33 mph.
Wednesday Night
Mostly clear, with a low around 17. North wind 7 to 14 mph, with gusts as high as 24 mph.
Thursday
Mostly sunny, with a high near 31.
Thursday Night
Mostly cloudy, with a low around 25.
Friday
A slight chance of rain and snow after noon. Mostly cloudy, with a high near 41. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
Partly sunny, with a high near 27.
Saturday Night
Partly cloudy, with a low around 8.
Sunday
Mostly sunny, with a high near 25.
Sunday Night
Partly cloudy, with a low around 12.
M.L.King Day
Mostly sunny, with a high near 34.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Moscow Mills MO
 38.97°N 90.84°W (Elev. 597 ft)
Last Update:
9:41 pm CST Jan 12, 2026
Forecast Valid:
10pm CST Jan 12, 2026-6pm CST Jan 19, 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