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

45°F

7°C

Humidity 49%
Wind Speed N 7 mph
Barometer 30.04 in (1016.9 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 28 Feb 2:54 am CST
Extended Forecast for

3 Miles NNW Elsberry MO

  • Overnight

    Overnight: Mostly clear, with a low around 36. North wind around 6 mph.

    Low: 36 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of rain, mainly before 1pm. Mostly sunny, with a high near 60. Northeast wind 5 to 7 mph becoming south in the afternoon.

    High: 60 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 26. North wind 5 to 8 mph, with gusts as high as 20 mph.

    Low: 26 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Increasing clouds, with a high near 42. Northeast wind around 8 mph.

    High: 42 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: Snow likely. Cloudy, with a low around 29. East wind around 7 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 29 °F

    Snow Likely

  • Monday

    Monday: A chance of snow before 9am, then a chance of rain. Cloudy, with a high near 42. Chance of precipitation is 30%.

    High: 42 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Monday Night

    Monday Night: Rain. Low around 35. Chance of precipitation is 90%.

    Low: 35 °F

    Rain Likely
    then Rain

  • Tuesday

    Tuesday: Rain, with thunderstorms also possible after noon. High near 55. Chance of precipitation is 90%.

    High: 55 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 44. Chance of precipitation is 80%.

    Low: 44 °F

    Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 36. North wind around 6 mph.
Saturday
A 30 percent chance of rain, mainly before 1pm. Mostly sunny, with a high near 60. Northeast wind 5 to 7 mph becoming south in the afternoon.
Saturday Night
Partly cloudy, with a low around 26. North wind 5 to 8 mph, with gusts as high as 20 mph.
Sunday
A 20 percent chance of snow after noon. Increasing clouds, with a high near 42. Northeast wind around 8 mph.
Sunday Night
Snow likely. Cloudy, with a low around 29. East wind around 7 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Monday
A chance of snow before 9am, then a chance of rain. Cloudy, with a high near 42. Chance of precipitation is 30%.
Monday Night
Rain. Low around 35. Chance of precipitation is 90%.
Tuesday
Rain, with thunderstorms also possible after noon. High near 55. Chance of precipitation is 90%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 44. Chance of precipitation is 80%.
Wednesday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 62. Chance of precipitation is 70%.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Thursday
A 40 percent chance of rain. Partly sunny, with a high near 67.
Thursday Night
A 50 percent chance of rain. Partly cloudy, with a low around 51.
Friday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 69. Chance of precipitation is 70%.
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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:
1:36 am CST Feb 28, 2026
Forecast Valid:
2am CST Feb 28, 2026-6pm CST Mar 6, 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