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

Storm Impacting the Southwest U.S.; Above Normal Temperatures Further East

A storm system will shift across the southwest U.S. through Thursday with widespread showers and isolated thunderstorms. Isolated flooding is possible. High-elevation snow is also expected in parts of Nevada and the southern Sierra Nevada range. East of this storm, above average temperatures will challenge or break daily record high temperatures this week in the southern Plains and southeast U.S. Read More >

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Mostly Cloudy

48°F

9°C

Humidity 37%
Wind Speed SW 3 mph
Barometer 30.22 in (1023.7 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 18 Nov 10:55 am EST
Extended Forecast for

Accokeek MD

  • This Afternoon

    This Afternoon: A chance of rain, mainly after 5pm. Cloudy, with a high near 50. South wind 3 to 5 mph. Chance of precipitation is 30%.

    High: 50 °F

    Chance Rain

  • Tonight

    Tonight: Rain, mainly before 4am. Patchy fog before midnight, then patchy fog after 3am. Low around 40. Southeast wind 3 to 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 40 °F

    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 54. Calm wind becoming north around 6 mph in the morning.

    High: 54 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41. Northeast wind around 5 mph becoming calm in the evening.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Cloudy, with a high near 55. Calm wind.

    High: 55 °F

    Cloudy

  • Thursday Night

    Thursday Night: A chance of rain after 1am. Cloudy, with a low around 45. Chance of precipitation is 30%.

    Low: 45 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday

    Friday: A chance of rain before 1pm. Mostly cloudy, with a high near 63. Chance of precipitation is 30%.

    High: 63 °F

    Chance Rain

  • Friday Night

    Friday Night: Rain likely, mainly after 1am. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.

    Low: 46 °F

    Rain Likely

  • Saturday

    Saturday: A chance of rain. Partly sunny, with a high near 55. Chance of precipitation is 40%.

    High: 55 °F

    Chance Rain

Detailed Forecast

This Afternoon
A chance of rain, mainly after 5pm. Cloudy, with a high near 50. South wind 3 to 5 mph. Chance of precipitation is 30%.
Tonight
Rain, mainly before 4am. Patchy fog before midnight, then patchy fog after 3am. Low around 40. Southeast wind 3 to 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 54. Calm wind becoming north around 6 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 41. Northeast wind around 5 mph becoming calm in the evening.
Thursday
Cloudy, with a high near 55. Calm wind.
Thursday Night
A chance of rain after 1am. Cloudy, with a low around 45. Chance of precipitation is 30%.
Friday
A chance of rain before 1pm. Mostly cloudy, with a high near 63. Chance of precipitation is 30%.
Friday Night
Rain likely, mainly after 1am. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Saturday
A chance of rain. Partly sunny, with a high near 55. Chance of precipitation is 40%.
Saturday Night
A chance of rain before 1am. Partly cloudy, with a low around 36. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 56.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Mostly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Accokeek MD
 38.66°N 77.01°W (Elev. 167 ft)
Last Update:
9:54 am EST Nov 18, 2025
Forecast Valid:
12pm EST Nov 18, 2025-6pm EST Nov 24, 2025
 
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