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.

Mostly Cloudy

51°F

11°C

Humidity 46%
Wind Speed W 12 mph
Barometer 30.11 in (1019.7 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 1 Nov 12:54 pm CDT
Extended Forecast for

5 Miles SE Silex MO

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 30 percent chance of rain, mainly after 5pm. Mostly cloudy, with a high near 49. West wind around 8 mph.

    High: 49 °F

    Chance Rain

  • Tonight

    Tonight: A 20 percent chance of rain before 8pm. Widespread frost, mainly after 1am. Otherwise, partly cloudy, with a low around 31. Light northwest wind.

    Low: 31 °F

    Slight Chance
    Rain then
    Frost

  • Sunday

    Sunday: Patchy fog between 9am and 10am. Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 53. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 53 °F

    Frost and
    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 37. South wind 3 to 5 mph.

    Low: 37 °F

    Clear

  • Monday

    Monday: Areas of frost before 8am. Otherwise, sunny, with a high near 63. Southwest wind 5 to 7 mph becoming northwest in the afternoon.

    High: 63 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 68.

    High: 68 °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 68.

    High: 68 °F

    Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of rain, mainly after 5pm. Mostly cloudy, with a high near 49. West wind around 8 mph.
Tonight
A 20 percent chance of rain before 8pm. Widespread frost, mainly after 1am. Otherwise, partly cloudy, with a low around 31. Light northwest wind.
Sunday
Patchy fog between 9am and 10am. Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 53. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
Clear, with a low around 37. South wind 3 to 5 mph.
Monday
Areas of frost before 8am. Otherwise, sunny, with a high near 63. Southwest wind 5 to 7 mph becoming northwest in the afternoon.
Monday Night
Mostly clear, with a low around 40.
Tuesday
Mostly sunny, with a high near 68.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Sunny, with a high near 68.
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 20 percent chance of rain. Mostly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SE Silex MO
 39.08°N 90.98°W (Elev. 673 ft)
Last Update:
12:01 pm CDT Nov 1, 2025
Forecast Valid:
1pm CDT Nov 1, 2025-6pm CST Nov 7, 2025
 
Forecast Discussion
 
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Additional Resources

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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