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.

Fair

72°F

22°C

Humidity 79%
Wind Speed E 3 mph
Barometer 30.03 in (1016.3 mb)
Dewpoint 65°F (18°C)
Visibility 8.00 mi
Last update 12 Jun 6:54 am CDT
Extended Forecast for

5 Miles W Dow IL

  • Today

    Today: A slight chance of showers and thunderstorms before 4pm, then a slight chance of showers after 5pm. Cloudy, with a high near 81. South wind 3 to 7 mph. Chance of precipitation is 20%.

    High: 81 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 1am. Cloudy, with a low around 68. Southeast wind around 6 mph.

    Low: 68 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday

    Friday: A chance of showers, then showers and possibly a thunderstorm after 10am. High near 79. Southeast wind 6 to 9 mph. Chance of precipitation is 80%.

    High: 79 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 68. South wind 3 to 6 mph. Chance of precipitation is 50%.

    Low: 68 °F

    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a high near 83. South wind 5 to 7 mph becoming north in the afternoon. Chance of precipitation is 40%.

    High: 83 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    T-storms

Detailed Forecast

Today
A slight chance of showers and thunderstorms before 4pm, then a slight chance of showers after 5pm. Cloudy, with a high near 81. South wind 3 to 7 mph. Chance of precipitation is 20%.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 1am. Cloudy, with a low around 68. Southeast wind around 6 mph.
Friday
A chance of showers, then showers and possibly a thunderstorm after 10am. High near 79. Southeast wind 6 to 9 mph. Chance of precipitation is 80%.
Friday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 68. South wind 3 to 6 mph. Chance of precipitation is 50%.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a high near 83. South wind 5 to 7 mph becoming north in the afternoon. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82.
Sunday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 85.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Dow IL
 39.05°N 90.41°W (Elev. 600 ft)
Last Update:
5:52 am CDT Jun 12, 2025
Forecast Valid:
7am CDT Jun 12, 2025-6pm CDT Jun 18, 2025
 
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