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

79°F

26°C

Humidity 72%
Wind Speed SE 7 mph
Barometer 30.05 in (1017.1 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 5 Aug 9:54 am CDT
Extended Forecast for

3 Miles NE Dow IL

  • Today

    Today: Isolated showers and thunderstorms.  Mostly sunny, with a high near 88. South wind around 9 mph.  Chance of precipitation is 20%.

    High: 88 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5am.  Low around 68. Northwest wind around 6 mph becoming light and variable  in the evening.  Chance of precipitation is 80%.

    Low: 68 °F

    Scattered
    T-storms then
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms, mainly before noon.  High near 83. Light and variable wind becoming southwest around 6 mph in the morning.  Chance of precipitation is 80%.

    High: 83 °F

    T-storms then
    Isolated
    T-storms

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms.  Cloudy, then gradually becoming partly cloudy, with a low around 68. Light southeast wind.

    Low: 68 °F

    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 84. Southwest wind 5 to 7 mph.

    High: 84 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am.  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

  • Sunday

    Sunday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

Detailed Forecast

Today
Isolated showers and thunderstorms. Mostly sunny, with a high near 88. South wind around 9 mph. Chance of precipitation is 20%.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5am. Low around 68. Northwest wind around 6 mph becoming light and variable in the evening. Chance of precipitation is 80%.
Thursday
Showers and thunderstorms, mainly before noon. High near 83. Light and variable wind becoming southwest around 6 mph in the morning. Chance of precipitation is 80%.
Thursday Night
A 50 percent chance of showers and thunderstorms. Cloudy, then gradually becoming partly cloudy, with a low around 68. Light southeast wind.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. Southwest wind 5 to 7 mph.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. 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
Sunny, with a high near 91.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny, with a high near 92.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Dow IL
 39.06°N 90.27°W (Elev. 650 ft)
9:06 am CDT Aug 5, 2026
10am CDT Aug 5, 2026-6pm CDT Aug 11, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database