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 >

Hazardous Weather Conditions

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Thunderstorm in Vicinity

69°F

21°C

Humidity 94%
Wind Speed Calm
Barometer 29.84 in (1010.7 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 23 Aug 12:55 am EDT
Extended Forecast for

2 Miles WNW Saint Charles MD

  • Overnight

    Overnight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 66. Light south wind. Chance of precipitation is 40%.

    Low: 66 °F

    Scattered
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 85. West wind 5 to 9 mph.

    High: 85 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 62. Light northwest wind.

    Low: 62 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 84. West wind 3 to 8 mph.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. Light northwest wind.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers. Partly cloudy, with a low around 68. Chance of precipitation is 20%.

    Low: 68 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 66. Light south wind. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 85. West wind 5 to 9 mph.
Sunday Night
Mostly clear, with a low around 62. Light northwest wind.
Monday
Sunny, with a high near 84. West wind 3 to 8 mph.
Monday Night
Mostly clear, with a low around 61. Light northwest wind.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Sunny, with a high near 86.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 68. Chance of precipitation is 20%.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 50%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Saint Charles MD
 38.61°N 76.96°W (Elev. 200 ft)
Last Update:
10:53 pm EDT Aug 22, 2026
Forecast Valid:
1am EDT Aug 23, 2026-6pm EDT 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