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.

Overcast

71°F

22°C

Humidity 94%
Wind Speed NW 7 mph
Barometer 30.00 in (1015.3 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 14 Oct 8:54 am CDT
Extended Forecast for

2 Miles W Old Monroe MO

  • Today

    Today: Showers and possibly a thunderstorm, mainly before noon, then a chance of showers and thunderstorms after noon. High near 76. Light and variable wind becoming north 5 to 7 mph in the afternoon. Chance of precipitation is 80%.

    High: 76 °F

    Showers then
    Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Cloudy, with a low around 63. North wind around 6 mph becoming east after midnight. Chance of precipitation is 40%.

    Low: 63 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday

    Thursday: Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. Patchy fog between 8am and 11am. High near 80. East wind 6 to 9 mph becoming southwest in the afternoon. Chance of precipitation is 90%.

    High: 80 °F

    Showers and
    Patchy Fog
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 46. Northwest wind 6 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.

    Low: 46 °F

    Showers

  • Friday

    Friday: Mostly sunny, with a high near 59. Breezy, with a northwest wind 18 to 21 mph, with gusts as high as 33 mph.

    High: 59 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 37.

    Low: 37 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

Detailed Forecast

Today
Showers and possibly a thunderstorm, mainly before noon, then a chance of showers and thunderstorms after noon. High near 76. Light and variable wind becoming north 5 to 7 mph in the afternoon. Chance of precipitation is 80%.
Tonight
A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Cloudy, with a low around 63. North wind around 6 mph becoming east after midnight. Chance of precipitation is 40%.
Thursday
Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. Patchy fog between 8am and 11am. High near 80. East wind 6 to 9 mph becoming southwest in the afternoon. Chance of precipitation is 90%.
Thursday Night
Showers and possibly a thunderstorm. Low around 46. Northwest wind 6 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Friday
Mostly sunny, with a high near 59. Breezy, with a northwest wind 18 to 21 mph, with gusts as high as 33 mph.
Friday Night
Mostly clear, with a low around 37.
Saturday
Sunny, with a high near 62.
Saturday Night
Clear, with a low around 37.
Sunday
Sunny, with a high near 71.
Sunday Night
Partly cloudy, with a low around 43.
Monday
Partly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Old Monroe MO
 38.94°N 90.79°W (Elev. 499 ft)
Last Update:
5:06 am CDT Oct 14, 2026
Forecast Valid:
8am CDT Oct 14, 2026-6pm CDT Oct 20, 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