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

Hot Temperatures in the West; Heavy Rainfall and Flooding Potential in the Southwest

Hot to extremely hot temperatures are in place across coastal southern California again today and the interior Northwest U.S into Thursday, with the Pacific Northwest carrying the potential for record-breaking high temperatures. A combination of monsoonal moisture and tropical moisture ahead of tropical cyclone Lorena will bring heavy rainfall and the potential for flooding through the week. Read More >

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Fair

62°F

17°C

Humidity 91%
Wind Speed Calm
Barometer 29.97 in (1015.1 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 3 Sep 8:55 am EDT
Extended Forecast for

Saint Charles MD

  • Today

    Today: Mostly sunny, with a high near 81. Calm wind becoming south around 5 mph in the afternoon.

    High: 81 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 61. Southeast wind around 6 mph.

    Low: 61 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 86. South wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    High: 86 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 63. South wind 6 to 8 mph. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 89. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 89 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 50%.

    High: 88 °F

    Sunny then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers before 2am. Mostly cloudy, with a low around 61. Chance of precipitation is 40%.

    Low: 61 °F

    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 81. Calm wind becoming south around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 61. Southeast wind around 6 mph.
Thursday
A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 86. South wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 63. South wind 6 to 8 mph. Chance of precipitation is 20%.
Friday
Sunny, with a high near 89. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Friday Night
Mostly clear, with a low around 69.
Saturday
A chance of showers after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 50%.
Saturday Night
A chance of showers before 2am. Mostly cloudy, with a low around 61. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Charles MD
 38.61°N 76.93°W (Elev. 197 ft)
Last Update:
10:30 am EDT Sep 3, 2025
Forecast Valid:
10am EDT Sep 3, 2025-6pm EDT Sep 9, 2025
 
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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