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

40°F

4°C

Humidity 43%
Wind Speed SW 12 mph
Barometer 30.29 in (1025.9 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 12 Jan 9:54 am CST
Extended Forecast for

2 Miles SSE Paynesville MO

  • Today

    Today: Sunny, with a high near 51. Southwest wind 6 to 9 mph.

    High: 51 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 35. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 35 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 57. Southwest wind 7 to 15 mph, with gusts as high as 26 mph.

    High: 57 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 36. West wind 6 to 9 mph, with gusts as high as 22 mph.

    Low: 36 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a temperature falling to around 32 by 5pm. Northwest wind 10 to 15 mph, with gusts as high as 33 mph.

    High: 42 °F⇓

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 16.

    Low: 16 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of snow showers after noon. Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny
    then Slight
    Chance Snow
    Showers

Detailed Forecast

Today
Sunny, with a high near 51. Southwest wind 6 to 9 mph.
Tonight
Mostly clear, with a low around 35. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Tuesday
Increasing clouds, with a high near 57. Southwest wind 7 to 15 mph, with gusts as high as 26 mph.
Tuesday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 36. West wind 6 to 9 mph, with gusts as high as 22 mph.
Wednesday
Mostly cloudy, with a temperature falling to around 32 by 5pm. Northwest wind 10 to 15 mph, with gusts as high as 33 mph.
Wednesday Night
Partly cloudy, with a low around 16.
Thursday
Mostly sunny, with a high near 31.
Thursday Night
Mostly cloudy, with a low around 26.
Friday
A 20 percent chance of snow showers after noon. Partly sunny, with a high near 40.
Friday Night
Mostly cloudy, with a low around 17.
Saturday
Partly sunny, with a high near 27.
Saturday Night
Partly cloudy, with a low around 9.
Sunday
Mostly sunny, with a high near 27.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Paynesville MO
 39.23°N 90.89°W (Elev. 492 ft)
Last Update:
9:36 am CST Jan 12, 2026
Forecast Valid:
10am CST Jan 12, 2026-6pm CST Jan 18, 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