National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Overcast

54°F

12°C

Humidity 83%
Wind Speed E 6 mph
Barometer 30.02 in (1016.5 mb)
Dewpoint 49°F (9°C)
Visibility 7.00 mi
Wind Chill52°F (11°C)
Last update 20 Nov 1:54 pm CST
Extended Forecast for

3 Miles SSW Dow IL

  • This Afternoon

    This Afternoon: Cloudy, with a high near 55. Southeast wind around 5 mph.

    High: 55 °F

    Cloudy

  • Tonight

    Tonight: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1am. Patchy fog after midnight. Low around 52. East wind 3 to 6 mph. Chance of precipitation is 100%.

    Low: 52 °F

    Chance Rain
    then Rain and
    Patchy Fog

  • Friday

    Friday: Rain. Patchy fog before 10am. High near 56. East wind 7 to 10 mph. Chance of precipitation is 100%.

    High: 56 °F

    Rain and
    Patchy Fog
    then Rain
    Likely

  • Friday Night

    Friday Night: Rain, mainly before midnight. Low around 41. Northeast wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    Low: 41 °F

    Rain then
    Chance Rain

  • Saturday

    Saturday: Sunny, with a high near 56. North wind around 6 mph becoming west in the afternoon.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Monday

    Monday: Rain likely, mainly after noon. Mostly cloudy, with a high near 57. Chance of precipitation is 70%.

    High: 57 °F

    Chance Rain
    then Rain
    Likely

Detailed Forecast

This Afternoon
Cloudy, with a high near 55. Southeast wind around 5 mph.
Tonight
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1am. Patchy fog after midnight. Low around 52. East wind 3 to 6 mph. Chance of precipitation is 100%.
Friday
Rain. Patchy fog before 10am. High near 56. East wind 7 to 10 mph. Chance of precipitation is 100%.
Friday Night
Rain, mainly before midnight. Low around 41. Northeast wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Saturday
Sunny, with a high near 56. North wind around 6 mph becoming west in the afternoon.
Saturday Night
Mostly clear, with a low around 38.
Sunday
Sunny, with a high near 61.
Sunday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 43.
Monday
Rain likely, mainly after noon. Mostly cloudy, with a high near 57. Chance of precipitation is 70%.
Monday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 61.
Tuesday Night
Partly cloudy, with a low around 35.
Wednesday
Mostly sunny, with a high near 47.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Dow IL
 39°N 90.33°W (Elev. 597 ft)
Last Update:
2:41 pm CST Nov 20, 2025
Forecast Valid:
2pm CST Nov 20, 2025-6pm CST Nov 26, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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