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

65°F

18°C

Humidity 90%
Wind Speed W 5 mph
Barometer 29.92 in (1012.8 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 18 Jun 10:54 pm CDT
Extended Forecast for

5 Miles ESE Michael IL

Flood Warning until further notice
Click here for hazard details and duration
Flood Warning until further notice
  •  
    Flood Warning until further notice

    NOW until further notice

    Flood Warning

  • Tonight

    Low: 60 °F

    Patchy Fog

  • Juneteenth

    Juneteenth: Patchy fog before 7am. Otherwise, sunny, with a high near 82. Light northwest wind.

    High: 82 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 84. Light and variable wind.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 64. Southeast wind 3 to 5 mph. Chance of precipitation is 40%.

    Low: 64 °F

    Mostly Clear
    then Chance
    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 90%.

    High: 81 °F

    Showers then
    T-storms

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 63. Chance of precipitation is 80%.

    Low: 63 °F

    Showers

  • Monday

    Monday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 77.

    High: 77 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 60. Calm wind.
Juneteenth
Patchy fog before 7am. Otherwise, sunny, with a high near 82. Light northwest wind.
Friday Night
Partly cloudy, with a low around 63. Calm wind.
Saturday
Mostly sunny, with a high near 84. Light and variable wind.
Saturday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 64. Southeast wind 3 to 5 mph. Chance of precipitation is 40%.
Sunday
Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 90%.
Sunday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 63. Chance of precipitation is 80%.
Monday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 60.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles ESE Michael IL
 39.2°N 90.52°W (Elev. 600 ft)
Last Update:
11:30 pm CDT Jun 18, 2026
Forecast Valid:
11pm CDT Jun 18, 2026-6pm CDT Jun 25, 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