Summer Heat Continues; Severe Weather For Northeast

A large ridge of high pressure continues to deliver summer heat w/ humidity in several sections of the country. Excessive heat warnings and heat advisories are in effect across the Desert Southwest, southern Plains, Lower Mississippi Valley and a small part of the Mid-Atlantic. Meanwhile, severe thunderstorms are in the forecast for the Northeast into the northern Mid-Atlantic for damaging winds. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Partly Cloudy

70°F

21°C

Humidity 93%
Wind Speed Calm
Barometer 30.02 in (1016.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 20 Aug 10:52 pm EDT
Extended Forecast for

2 Miles SW Great Falls VA

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 5am.  Mostly cloudy, with a low around 71. South wind 3 to 5 mph.  Chance of precipitation is 20%.

    Slight Chance
    T-storms

    Low: 71 °F

  • Wednesday

    Wednesday: Scattered showers and thunderstorms, mainly after 2pm.  Partly sunny, with a high near 90. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.  Chance of precipitation is 40%.

    Scattered
    T-storms

    High: 90 °F

  • Wednesday
    Night

    Wednesday Night: Scattered showers and thunderstorms, mainly before 8pm.  Partly cloudy, with a low around 73. West wind 5 to 7 mph.  Chance of precipitation is 30%.

    Scattered
    T-storms

    Low: 73 °F

  • Thursday

    Thursday: A chance of showers and thunderstorms after 8am.  Partly sunny, with a high near 91. West wind around 6 mph.  Chance of precipitation is 50%.

    Chance
    Showers then
    Chance
    T-storms

    High: 91 °F

  • Thursday
    Night

    Thursday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 68. Northwest wind 3 to 6 mph.  Chance of precipitation is 50%.

    Chance
    T-storms then
    Chance
    Showers

    Low: 68 °F

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 8am.  Partly sunny, with a high near 81. Chance of precipitation is 50%.

    Chance
    T-storms

    High: 81 °F

  • Friday
    Night

    Friday Night: A chance of showers.  Mostly cloudy, with a low around 62. Chance of precipitation is 40%.

    Chance
    Showers

    Low: 62 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 80.

    Mostly Sunny

    High: 80 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 63.

    Mostly Clear

    Low: 63 °F

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 5am. Mostly cloudy, with a low around 71. South wind 3 to 5 mph. Chance of precipitation is 20%.
Wednesday
Scattered showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 90. Southwest wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.
Wednesday Night
Scattered showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 73. West wind 5 to 7 mph. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms after 8am. Partly sunny, with a high near 91. West wind around 6 mph. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Northwest wind 3 to 6 mph. Chance of precipitation is 50%.
Friday
A chance of showers, with thunderstorms also possible after 8am. Partly sunny, with a high near 81. Chance of precipitation is 50%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 63.
Sunday
Mostly sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 64.
Monday
A chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 30%.
Monday Night
Mostly cloudy, with a low around 66.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 30%.
Click Map For Forecast
Point Forecast:
2 Miles SW Great Falls VA
 38.99°N 77.32°W (Elev. 351 ft)
10:30 pm EDT Aug 20, 2019
11pm EDT Aug 20, 2019-6pm EDT Aug 27, 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