Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

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 87%
Wind Speed Calm
Barometer 30.07 in (1017.6 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 23 Aug 4:54 am CDT
Extended Forecast for

3 Miles NNE Saint Charles MO

  • Today

    Today: Sunny, with a high near 83. Northwest wind 3 to 8 mph.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 62. North wind around 5 mph becoming calm  in the evening.

    Low: 62 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 83. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65. East wind 5 to 7 mph becoming calm  in the evening.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85. East wind 3 to 6 mph.

    High: 85 °F

    Mostly Sunny

  • Tuesday Night

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

    Low: 68 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 83. Northwest wind 3 to 8 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 62. North wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 83. Calm wind becoming northeast around 6 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 65. East wind 5 to 7 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 85. East wind 3 to 6 mph.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Mostly sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Sunny, with a high near 87.
Thursday Night
Mostly clear, with a low around 66.
Friday
Sunny, with a high near 85.
Friday Night
Partly cloudy, with a low around 67.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Saint Charles MO
 38.85°N 90.51°W (Elev. 436 ft)
5:05 am CDT Aug 23, 2026
5am CDT Aug 23, 2026-6pm CDT Aug 29, 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