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.

Fair

1°C

34°F

Humidity 73%
Wind Speed N 17 km/h
Barometer 1024.9 mb (30.26 in)
Dewpoint -3°C (26°F)
Visibility 16 km
Wind Chill-3°C (26°F)
Last update 7 Feb 12:54 am CST
Extended Forecast for

4 Miles NNW Mozier IL

  • Overnight

    Overnight: Clear, with a low around -4. North wind 5 to 10 km/h.

    Low: -4 °C

    Clear

  • Saturday

    Saturday: Sunny, with a high near 2. Calm wind becoming east 5 to 8 km/h in the morning.

    High: 2 °C

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -3. South wind 8 to 11 km/h.

    Low: -3 °C

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 8. Southeast wind 8 to 11 km/h.

    High: 8 °C

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around -2. Southeast wind 3 to 8 km/h.

    Low: -2 °C

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 14.

    High: 14 °C

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 5.

    Low: 5 °C

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 18.

    High: 18 °C

    Mostly Sunny
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 1.

    Low: 1 °C

    Chance Rain

Detailed Forecast

Overnight
Clear, with a low around -4. North wind 5 to 10 km/h.
Saturday
Sunny, with a high near 2. Calm wind becoming east 5 to 8 km/h in the morning.
Saturday Night
Mostly cloudy, with a low around -3. South wind 8 to 11 km/h.
Sunday
Mostly sunny, with a high near 8. Southeast wind 8 to 11 km/h.
Sunday Night
Mostly clear, with a low around -2. Southeast wind 3 to 8 km/h.
Monday
Sunny, with a high near 14.
Monday Night
Mostly clear, with a low around 5.
Tuesday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 18.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 1.
Wednesday
A 20 percent chance of rain. Mostly cloudy, with a high near 9.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around -1.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 7.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around -1.
Friday
A 30 percent chance of rain. Mostly cloudy, with a high near 7.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Mozier IL
 39.34°N 90.77°W (Elev. 696 m)
Last Update:
12:26 am CST Feb 7, 2026
Forecast Valid:
1am CST Feb 7, 2026-6pm CST Feb 13, 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