Cold Front to Bring Cooling and Heavy Rain in the East; Building Heat and Monsoon in the West

A slow moving cold front will bring temperatures back to near normal early this week in the East. Strong to severe storms ahead of the front may produce damaging winds and heavy rain that could cause flash flooding. Strengthening high pressure in the West will produce surging monsoon moisture with potential for flash flooding. Heat may become excessive in the Desert Southwest this week. Read More >

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Mostly Cloudy

31°C

87°F

Humidity 61%
Wind Speed SW 13 km/h
Barometer 1009.0 mb (29.79 in)
Dewpoint 22°C (72°F)
Visibility 16 km
Heat Index34°C (93°F)
Last update 22 Jul 7:56 pm EDT
Extended Forecast for

Mount Vernon VA

Flash Flood Watch until July 23, 06:00am
Severe T-storm Watch until July 22, 10:00pm
Click here for hazard details and duration
Flash Flood Watch
...
  •  
    Flash Flood Watch until July 23, 06:00am
    Severe T-storm Watch until July 22, 10:00pm

    NOW: Multiple
    hazards in effect

    Click HERE for Details

  • Tonight

    Tonight: Showers and thunderstorms, mainly before midnight, then showers and possibly a thunderstorm after midnight. Some storms could be severe, with damaging winds, heavy rain, and frequent lightning.  Low around 22. Southwest wind 10 to 13 km/h.  Chance of precipitation is 90%. New rainfall amounts between 1 and 2 cm possible.

    Severe
    Thunderstorms

    Low: 22 °C

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm.  Cloudy, with a high near 26. Northwest wind 5 to 10 km/h.  Chance of precipitation is 70%. New precipitation amounts between 5 and 7.5 mm possible.

    Showers
    Likely

    High: 26 °C

  • Tuesday
    Night

    Tuesday Night: A chance of showers, mainly before 11pm.  Mostly cloudy, with a low around 19. Calm wind.  Chance of precipitation is 30%.

    Chance
    Showers

    Low: 19 °C

  • Wednesday

    Wednesday: Mostly sunny, with a high near 29. North wind 8 to 11 km/h.

    Mostly Sunny

    High: 29 °C

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 19. Calm wind.

    Partly Cloudy

    Low: 19 °C

  • Thursday

    Thursday: Sunny, with a high near 29.

    Sunny

    High: 29 °C

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 18.

    Mostly Clear

    Low: 18 °C

  • Friday

    Friday: Sunny, with a high near 31.

    Sunny

    High: 31 °C

Detailed Forecast

Tonight
Showers and thunderstorms, mainly before midnight, then showers and possibly a thunderstorm after midnight. Some storms could be severe, with damaging winds, heavy rain, and frequent lightning. Low around 22. Southwest wind 10 to 13 km/h. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 cm possible.
Tuesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 26. Northwest wind 5 to 10 km/h. Chance of precipitation is 70%. New precipitation amounts between 5 and 7.5 mm possible.
Tuesday Night
A chance of showers, mainly before 11pm. Mostly cloudy, with a low around 19. Calm wind. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 29. North wind 8 to 11 km/h.
Wednesday Night
Partly cloudy, with a low around 19. Calm wind.
Thursday
Sunny, with a high near 29.
Thursday Night
Mostly clear, with a low around 18.
Friday
Sunny, with a high near 31.
Friday Night
Mostly clear, with a low around 19.
Saturday
Sunny, with a high near 31.
Saturday Night
Mostly clear, with a low around 19.
Sunday
Sunny, with a high near 31.
Sunday Night
Mostly clear, with a low around 21.
Monday
Sunny, with a high near 31.
Click Map For Forecast
Point Forecast:
Mount Vernon VA
 38.72°N 77.11°W (Elev. 11 m)
7:55 pm EDT Jul 22, 2019
8pm EDT Jul 22, 2019-6pm EDT Jul 29, 2019
 
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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