Showers and Storms continue across the East; Heat, Critical Fire Weather, Drought, and Poor Air Quality continues in the West

A series of fronts will focus locally heavy showers and storms across portions of the central and eastern U.S. through the end of the workweek. Dangerous to extreme heat continues across the Southwest U.S., eventually spreading eastward over the weekend into early next week. Elevated fire weather conditions continue across the Great Basin, with degraded air quality lingering across the Northwest. Read More >

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

87°F

31°C

Humidity 51%
Wind Speed E 6 mph
Barometer 29.99 in (1014.9 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 4 Aug 4:54 pm CDT
Extended Forecast for

5 Miles W Dow IL

  • Tonight

    Tonight: Mostly clear, with a low around 69. Southeast wind 3 to 6 mph.

    Low: 69 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm.  Sunny, then becoming partly sunny during the afternoon, with a high near 89. Light south wind increasing to 5 to 9 mph in the morning.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly after 3am.  Mostly cloudy, with a low around 69. Northeast wind 5 to 9 mph becoming light and variable  after midnight.  Chance of precipitation is 70%.

    Low: 69 °F

    T-storms
    Likely

  • Thursday

    Thursday: Showers and thunderstorms, mainly before 10am.  High near 83. South wind around 6 mph.  Chance of precipitation is 80%.

    High: 83 °F

    T-storms then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 69. Light and variable wind.

    Low: 69 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 10am, then a chance of showers and thunderstorms after 10am.  Partly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am.  Partly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 69. Southeast wind 3 to 6 mph.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny, then becoming partly sunny during the afternoon, with a high near 89. Light south wind increasing to 5 to 9 mph in the morning.
Wednesday Night
Showers and thunderstorms likely, mainly after 3am. Mostly cloudy, with a low around 69. Northeast wind 5 to 9 mph becoming light and variable after midnight. Chance of precipitation is 70%.
Thursday
Showers and thunderstorms, mainly before 10am. High near 83. South wind around 6 mph. Chance of precipitation is 80%.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Light and variable wind.
Friday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 10am, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 85. Chance of precipitation is 30%.
Friday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 69.
Saturday
Sunny, with a high near 89.
Saturday Night
Mostly clear, with a low around 72.
Sunday
Mostly sunny, with a high near 91.
Sunday Night
Mostly clear, with a low around 75.
Monday
Sunny, with a high near 94.
Monday Night
Partly cloudy, with a low around 76.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Dow IL
 39.05°N 90.41°W (Elev. 600 ft)
5:21 pm CDT Aug 4, 2026
5pm CDT Aug 4, 2026-6pm CDT Aug 11, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database