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.

Partly Cloudy

51°F

11°C

Humidity 50%
Wind Speed W 9 mph
Barometer 30.12 in (1020.0 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 1 Nov 11:54 am CDT
Extended Forecast for

3 Miles NE Dow IL

Freeze Warning November 2, 01:00am until November 2, 07:00am
Click here for hazard details and duration
Freeze Warning

  • This Afternoon

    This Afternoon: A 20 percent chance of rain after 1pm. Mostly cloudy, with a high near 51. West wind around 10 mph.

    High: 51 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A 20 percent chance of rain before 8pm. Widespread frost, mainly after 3am. Otherwise, partly cloudy, with a low around 30. Northwest wind around 6 mph becoming calm in the evening.

    Low: 30 °F

    Slight Chance
    Rain then
    Frost

  • Sunday

    Sunday: Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 54. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 54 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 37. South wind 3 to 6 mph.

    Low: 37 °F

    Clear

  • Monday

    Monday: Areas of frost before 8am. Otherwise, sunny, with a high near 63. South wind 6 to 10 mph becoming west in the afternoon.

    High: 63 °F

    Areas Frost
    then Sunny

  • Monday Night

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

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of rain after 1pm. Mostly cloudy, with a high near 51. West wind around 10 mph.
Tonight
A 20 percent chance of rain before 8pm. Widespread frost, mainly after 3am. Otherwise, partly cloudy, with a low around 30. Northwest wind around 6 mph becoming calm in the evening.
Sunday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 54. Calm wind becoming southwest around 6 mph in the afternoon.
Sunday Night
Clear, with a low around 37. South wind 3 to 6 mph.
Monday
Areas of frost before 8am. Otherwise, sunny, with a high near 63. South wind 6 to 10 mph becoming west in the afternoon.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Mostly sunny, with a high near 67.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Sunny, with a high near 69.
Wednesday Night
Clear, with a low around 41.
Thursday
Sunny, with a high near 66.
Thursday Night
A 20 percent chance of rain. Partly cloudy, with a low around 50.
Friday
A 30 percent chance of rain. Partly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Dow IL
 39.06°N 90.27°W (Elev. 650 ft)
Last Update:
12:01 pm CDT Nov 1, 2025
Forecast Valid:
12pm CDT Nov 1, 2025-6pm CST Nov 7, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation