Heat Building and Strong to Severe Storms

A building ridge of high pressure will produce possible record heat and extremely humid conditions over the next several days. The summer heat wave is already present in the south Plains, will expand across the Mid-Atlantic/Northeast and then shift into the Desert Southwest. Meanwhile, a cold front may trigger strong to severe storms w/ heavy rain from the Great Lakes to the south-central Plains Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Partly Cloudy

78°F

26°C

Humidity 69%
Wind Speed SW 5 mph
Barometer 29.97 in (1014.7 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 17 Aug 8:52 pm EDT
Extended Forecast for

Sterling VA

  • Tonight

    Tonight: Isolated showers and thunderstorms before 10pm.  Mostly cloudy, with a low around 71. South wind around 5 mph.  Chance of precipitation is 20%.

    Isolated
    T-storms then
    Mostly Cloudy

    Low: 71 °F

  • Sunday

    Sunday: Scattered showers and thunderstorms after 3pm.  Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 94. Heat index values as high as 101. South wind 3 to 6 mph.  Chance of precipitation is 30%.

    Patchy Fog
    then
    Scattered
    T-storms

    High: 94 °F

  • Sunday
    Night

    Sunday Night: Scattered showers and thunderstorms before 9pm.  Patchy fog after 3am.  Otherwise, partly cloudy, with a low around 72. South wind around 6 mph becoming calm  after midnight.  Chance of precipitation is 30%.

    Scattered
    T-storms then
    Patchy Fog

    Low: 72 °F

  • Monday

    Monday: Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 95. Heat index values as high as 100. Light southwest wind.

    Patchy Fog
    then Mostly
    Sunny

    High: 95 °F

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 73. South wind around 5 mph becoming calm  in the evening.

    Partly Cloudy

    Low: 73 °F

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 94. Chance of precipitation is 50%.

    Mostly Sunny
    then Chance
    T-storms

    High: 94 °F

  • Tuesday
    Night

    Tuesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 72. Chance of precipitation is 50%.

    Chance
    T-storms

    Low: 72 °F

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 9am.  Partly sunny, with a high near 91. Chance of precipitation is 50%.

    Chance
    T-storms

    High: 91 °F

  • Wednesday
    Night

    Wednesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 72. Chance of precipitation is 50%.

    Chance
    T-storms then
    Chance
    Showers

    Low: 72 °F

Detailed Forecast

Tonight
Isolated showers and thunderstorms before 10pm. Mostly cloudy, with a low around 71. South wind around 5 mph. Chance of precipitation is 20%.
Sunday
Scattered showers and thunderstorms after 3pm. Patchy fog before 10am. Otherwise, mostly sunny, with a high near 94. Heat index values as high as 101. South wind 3 to 6 mph. Chance of precipitation is 30%.
Sunday Night
Scattered showers and thunderstorms before 9pm. Patchy fog after 3am. Otherwise, partly cloudy, with a low around 72. South wind around 6 mph becoming calm after midnight. Chance of precipitation is 30%.
Monday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 95. Heat index values as high as 100. Light southwest wind.
Monday Night
Partly cloudy, with a low around 73. South wind around 5 mph becoming calm in the evening.
Tuesday
A chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 94. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 50%.
Wednesday
A chance of showers, with thunderstorms also possible after 9am. Partly sunny, with a high near 91. Chance of precipitation is 50%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 50%.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 9am. Partly sunny, with a high near 89. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Friday
A chance of showers. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Friday Night
Mostly clear, with a low around 64.
Saturday
Mostly sunny, with a high near 86.
Click Map For Forecast
Point Forecast:
Sterling VA
 38.99°N 77.41°W (Elev. 325 ft)
7:31 pm EDT Aug 17, 2019
9pm EDT Aug 17, 2019-6pm EDT Aug 24, 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