National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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

61°F

16°C

Humidity 93%
Wind Speed W 3 mph
Barometer 30.08 in (1018.0 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 23 Aug 6:54 am CDT
Extended Forecast for

3 Miles ENE Winfield MO

  • Today

    Today: Mostly sunny, with a high near 82. Northwest wind 3 to 8 mph.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: Cloudy, then gradual clearing toward daybreak, with a low around 60. North wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Clearing Late

  • Monday

    Monday: Sunny, with a high near 82. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. East wind around 6 mph becoming calm in the evening.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 85 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 82. Northwest wind 3 to 8 mph.
Tonight
Cloudy, then gradual clearing toward daybreak, with a low around 60. North wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 82. Calm wind becoming northeast around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 63. East wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 85. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 67.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
Sunny, with a high near 87.
Thursday Night
Mostly clear, with a low around 65.
Friday
Sunny, with a high near 85.
Friday Night
Partly cloudy, with a low around 65.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Winfield MO
 39.01°N 90.7°W (Elev. 430 ft)
Last Update:
5:05 am CDT Aug 23, 2026
Forecast Valid:
7am CDT Aug 23, 2026-6pm CDT Aug 29, 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