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

73°F

23°C

Humidity 84%
Wind Speed Calm
Barometer 30.03 in (1016.4 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 4 Aug 10:54 pm CDT
Extended Forecast for

4 Miles E Dow IL

  • Tonight

    Tonight: Mostly clear, with a low around 68. Southeast wind 3 to 5 mph.

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm.  Increasing clouds, with a high near 89. Light south wind increasing to 5 to 9 mph in the morning.

    High: 89 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly after 3am.  Mostly cloudy, with a low around 69. North wind 5 to 9 mph becoming light and variable.  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 68. Light southeast wind.

    Low: 68 °F

    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms.  Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

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

    Low: 69 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 68. Southeast wind 3 to 5 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Increasing clouds, 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. North wind 5 to 9 mph becoming light and variable. 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 68. Light southeast wind.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Friday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Saturday
Mostly sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 71.
Sunday
A 20 percent chance of showers before 1pm. 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 75.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Dow IL
 39.04°N 90.24°W (Elev. 600 ft)
9:41 pm CDT Aug 4, 2026
11pm CDT Aug 4, 2026-6pm CDT Aug 11, 2026
 
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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