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

Flash Flooding Risk Continues in Texas; Wildfire Smoke Impacts in the East

Widespread, life-threatening considerable flash flooding is expected in south-central Texas through at least Friday. Catastrophic river flooding and rapid rises on small streams, arroyos, and typically dry washes are expected in the Texas Hill Country. Wildfire smoke is impacting air quality across much of the Great Lakes region into the Northeast U.S. with Air Quality Alerts in effect. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Fair

77°F

25°C

Humidity 86%
Wind Speed SE 3 mph
Barometer 29.91 in (1013.1 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 15 Jul 11:55 pm EDT
Extended Forecast for

Accokeek MDSimilar City Names

  • Overnight

    Overnight: Partly cloudy, with a low around 77. West wind around 6 mph.

    Low: 77 °F

    Partly Cloudy

  • Thursday

    Thursday: Patchy smoke. Mostly sunny, with a high near 96. Heat index values as high as 100. Light and variable wind becoming west around 6 mph in the afternoon.

    High: 96 °F

    Patchy Smoke

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 1am. Patchy smoke after midnight. Partly cloudy, with a low around 75. Light and variable wind becoming north around 6 mph after midnight. Chance of precipitation is 20%.

    Low: 75 °F

    Slight Chance
    T-storms

  • Friday

    Friday: Areas of smoke. Mostly sunny, with a high near 91. North wind around 5 mph becoming calm in the morning.

    High: 91 °F

    Areas Smoke

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 74. Southeast wind around 6 mph. Chance of precipitation is 20%.

    Low: 74 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 87. Chance of precipitation is 80%.

    High: 87 °F

    Chance
    T-storms then
    T-storms

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 73. Chance of precipitation is 80%.

    Low: 73 °F

    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 8am. Partly sunny, with a high near 88. Chance of precipitation is 50%.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 69. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 77. West wind around 6 mph.
Thursday
Patchy smoke. Mostly sunny, with a high near 96. Heat index values as high as 100. Light and variable wind becoming west around 6 mph in the afternoon.
Thursday Night
A slight chance of showers and thunderstorms before 1am. Patchy smoke after midnight. Partly cloudy, with a low around 75. Light and variable wind becoming north around 6 mph after midnight. Chance of precipitation is 20%.
Friday
Areas of smoke. Mostly sunny, with a high near 91. North wind around 5 mph becoming calm in the morning.
Friday Night
A slight chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 74. Southeast wind around 6 mph. Chance of precipitation is 20%.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 87. Chance of precipitation is 80%.
Saturday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 73. Chance of precipitation is 80%.
Sunday
A chance of showers, with thunderstorms also possible after 8am. Partly sunny, with a high near 88. Chance of precipitation is 50%.
Sunday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 88.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 20%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 90. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 50%.
Wednesday
A chance of showers. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Accokeek MDSimilar City Names
 38.68°N 77°W (Elev. 62 ft)
Last Update:
10:53 pm EDT Jul 15, 2026
Forecast Valid:
12am EDT Jul 16, 2026-6pm EDT Jul 22, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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