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.

Fog/Mist

50°F

10°C

Humidity 89%
Wind Speed SE 8 mph
Barometer 30.08 in (1018.5 mb)
Dewpoint 47°F (8°C)
Visibility 5.00 mi
Wind Chill47°F (8°C)
Last update 20 Nov 9:54 am CST
Extended Forecast for

2 Miles S Dow IL

  • Today

    Today: A slight chance of rain before 11am, then a slight chance of rain after 4pm. Cloudy, with a high near 56. Southeast wind around 7 mph. Chance of precipitation is 20%.

    High: 56 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A chance of rain, then rain likely and possibly a thunderstorm after midnight. Patchy fog after 8pm. Otherwise, cloudy, with a low around 52. East wind 3 to 6 mph. Chance of precipitation is 70%.

    Low: 52 °F

    Chance Rain
    and Patchy
    Fog then Rain
    Likely and
    Patchy Fog

  • Friday

    Friday: Rain and possibly a thunderstorm. Patchy fog before 10am. High near 62. Northeast wind 6 to 10 mph. Chance of precipitation is 90%.

    High: 62 °F

    Rain and
    Patchy Fog

  • Friday Night

    Friday Night: A 40 percent chance of rain before midnight. Mostly cloudy, with a low around 43. Northeast wind 6 to 9 mph.

    Low: 43 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 57. Northeast wind around 6 mph.

    High: 57 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 43 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Monday

    Monday: A 50 percent chance of rain. Mostly cloudy, with a high near 57.

    High: 57 °F

    Chance Rain

Detailed Forecast

Today
A slight chance of rain before 11am, then a slight chance of rain after 4pm. Cloudy, with a high near 56. Southeast wind around 7 mph. Chance of precipitation is 20%.
Tonight
A chance of rain, then rain likely and possibly a thunderstorm after midnight. Patchy fog after 8pm. Otherwise, cloudy, with a low around 52. East wind 3 to 6 mph. Chance of precipitation is 70%.
Friday
Rain and possibly a thunderstorm. Patchy fog before 10am. High near 62. Northeast wind 6 to 10 mph. Chance of precipitation is 90%.
Friday Night
A 40 percent chance of rain before midnight. Mostly cloudy, with a low around 43. Northeast wind 6 to 9 mph.
Saturday
Mostly sunny, with a high near 57. Northeast wind around 6 mph.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Mostly sunny, with a high near 61.
Sunday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 43.
Monday
A 50 percent chance of rain. Mostly cloudy, with a high near 57.
Monday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Tuesday
A 40 percent chance of rain. Partly sunny, with a high near 59.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
Partly sunny, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Dow IL
 39.02°N 90.3°W (Elev. 610 ft)
Last Update:
8:31 am CST Nov 20, 2025
Forecast Valid:
10am CST Nov 20, 2025-6pm CST Nov 26, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation