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

Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

92°F

33°C

Humidity 46%
Wind Speed SW 12 G 16 mph
Barometer 29.85 in (1010.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 17 Aug 5:52 pm EDT
Extended Forecast for

Sterling VA

  • This Afternoon

    This Afternoon: Scattered showers and thunderstorms. Partly sunny, with a high near 94. West wind around 6 mph. Chance of precipitation is 40%.

    High: 94 °F

    Scattered
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 9pm. Low around 69. Northwest wind 3 to 7 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    T-storms then
    Mostly Cloudy

  • Monday

    Monday: A chance of showers, mainly between 2pm and 5pm. Cloudy, with a high near 78. Northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 78 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers, mainly after 8pm. Mostly cloudy, with a low around 66. Northeast wind 5 to 8 mph. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers. Mostly cloudy, with a high near 77. East wind around 7 mph. Chance of precipitation is 30%.

    High: 77 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers before 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 30%.

    High: 82 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 8pm. Partly cloudy, with a low around 66. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Partly sunny, with a high near 94. West wind around 6 mph. Chance of precipitation is 40%.
Tonight
Showers and thunderstorms, mainly before 9pm. Low around 69. Northwest wind 3 to 7 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of showers, mainly between 2pm and 5pm. Cloudy, with a high near 78. Northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Monday Night
A chance of showers, mainly after 8pm. Mostly cloudy, with a low around 66. Northeast wind 5 to 8 mph. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 77. East wind around 7 mph. Chance of precipitation is 30%.
Tuesday Night
A slight chance of showers before 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 20%.
Wednesday
A chance of showers after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 30%.
Wednesday Night
A chance of showers before 8pm. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Partly cloudy, with a low around 65.
Friday
Mostly sunny, with a high near 85.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
A chance of showers. Partly sunny, with a high near 85.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sterling VA
 39°N 77.44°W (Elev. 299 ft)
Last Update:
5:23 pm EDT Aug 17, 2025
Forecast Valid:
5pm EDT Aug 17, 2025-6pm EDT Aug 24, 2025
 
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