Excessive Heat Continues today for Portions of Central and Eastern U.S.; Change in Weather Pattern this Week

Dangerous heat and humidity continues today from portions of the Plains to the East Coast. A cold front will bring lower temperatures, and potential for strong to severe thunderstorms with damaging winds and heavy rain that could produce flash flooding to the Central and Eastern U.S. through early this week. High pressure shifts West this week with building heat and monsoonal moisture. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

37°C

98°F

Humidity 45%
Wind Speed SW 20 km/h
Barometer 1010.5 mb (29.85 in)
Dewpoint 23°C (73°F)
Visibility 16 km
Heat Index43°C (109°F)
Last update 21 Jul 4:52 pm EDT
Extended Forecast for

Sterling VA

Flash Flood Watch July 22, 03:00pm until July 23, 06:00am
Excessive Heat Warning until July 21, 09:00pm
Click here for hazard details and duration
Flash Flood Watch
Excessive Heat Warning
  •  
    Excessive Heat Warning until July 21, 09:00pm

    NOW until
    9:00pm Sun

    Excessive Heat Warning

  • This
    Afternoon

    This Afternoon: Isolated showers and thunderstorms. Some of the storms could produce gusty winds and heavy rain.  Mostly sunny and hot, with a high near 36. Heat index values as high as 42. West wind around 14 km/h.  Chance of precipitation is 20%.

    Heavy Rain

    High: 36 °C

  • Tonight

    Tonight: Scattered showers and thunderstorms. Some of the storms could produce gusty winds and heavy rain.  Mostly cloudy, with a low around 24. West wind 5 to 10 km/h.  Chance of precipitation is 40%.

    Heavy Rain

    Low: 24 °C

  • Monday

    Monday: Showers and thunderstorms, mainly after noon. Some of the storms could produce gusty winds and heavy rain.  High near 32. Northwest wind 5 to 13 km/h becoming southwest in the afternoon.  Chance of precipitation is 80%. New rainfall amounts between 1 and 2 cm possible.

    Heavy Rain

    High: 32 °C

  • Monday
    Night

    Monday Night: Showers and possibly a thunderstorm. Some of the storms could produce gusty winds and heavy rain.  Low around 20. West wind 8 to 11 km/h.  Chance of precipitation is 80%. New rainfall amounts between 1 and 2 cm possible.

    Heavy Rain

    Low: 20 °C

  • Tuesday

    Tuesday: A chance of showers, mainly before noon.  Cloudy, with a high near 27. Northwest wind 11 to 14 km/h.  Chance of precipitation is 50%.

    Chance
    Showers then
    Slight Chance
    Showers

    High: 27 °C

  • Tuesday
    Night

    Tuesday Night: Mostly cloudy, with a low around 17.

    Mostly Cloudy

    Low: 17 °C

  • Wednesday

    Wednesday: Mostly sunny, with a high near 28.

    Mostly Sunny

    High: 28 °C

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 17.

    Mostly Clear

    Low: 17 °C

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Some of the storms could produce gusty winds and heavy rain. Mostly sunny and hot, with a high near 36. Heat index values as high as 42. West wind around 14 km/h. Chance of precipitation is 20%.
Tonight
Scattered showers and thunderstorms. Some of the storms could produce gusty winds and heavy rain. Mostly cloudy, with a low around 24. West wind 5 to 10 km/h. Chance of precipitation is 40%.
Monday
Showers and thunderstorms, mainly after noon. Some of the storms could produce gusty winds and heavy rain. High near 32. Northwest wind 5 to 13 km/h becoming southwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 cm possible.
Monday Night
Showers and possibly a thunderstorm. Some of the storms could produce gusty winds and heavy rain. Low around 20. West wind 8 to 11 km/h. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 cm possible.
Tuesday
A chance of showers, mainly before noon. Cloudy, with a high near 27. Northwest wind 11 to 14 km/h. Chance of precipitation is 50%.
Tuesday Night
Mostly cloudy, with a low around 17.
Wednesday
Mostly sunny, with a high near 28.
Wednesday Night
Mostly clear, with a low around 17.
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
Partly cloudy, with a low around 20.
Sunday
Mostly sunny, with a high near 32.
Click Map For Forecast
Point Forecast:
Sterling VA
 38.99°N 77.41°W (Elev. 99 m)
4:34 pm EDT Jul 21, 2019
5pm EDT Jul 21, 2019-6pm EDT Jul 28, 2019
 
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