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Water level observations return on the Potomac River at Harpers Ferry, West Virginia
West Virginia's Severe Weather Awareness Week. Check here for more on how to be ready for severe storms.
Issuance time of the morning (AM) Daily Climatological Report will change for all eight official climate stations from 12:30 AM local standard time to 2:30 AM local time year round

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Overcast

44°F

7°C

Humidity	63%
Wind Speed	Calm
Barometer	30.23 in (1023.6 mb)
Dewpoint	32°F (0°C)
Visibility	10.00 mi
Last update	28 Mar 5:52 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Herndon VA

Today
High: 66 °F
Mostly Cloudy
then
Scattered
Showers
Tonight
Low: 57 °F
Scattered
Showers then
Partly Cloudy
Saturday
High: 82 °F
Partly Sunny
Saturday Night
Low: 61 °F
Mostly Cloudy
Sunday
High: 78 °F
Mostly Cloudy
then Slight
Chance
T-storms
Sunday Night
Low: 64 °F
Chance
Showers
Monday
High: 77 °F
Chance
Showers then
Showers
Monday Night
Low: 44 °F
Showers then
Chance
Showers
Tuesday
High: 58 °F
Sunny

Detailed Forecast

Today

Scattered showers, mainly after 1pm. Mostly cloudy, with a high near 66. Light southwest wind increasing to 6 to 11 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 40%.

Tonight

Scattered showers before 9pm. Partly cloudy, with a low around 57. South wind 5 to 10 mph. Chance of precipitation is 30%.

Saturday

Partly sunny, with a high near 82. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.

Saturday Night

Mostly cloudy, with a low around 61. Southwest wind around 8 mph.

Sunday

A slight chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 78. South wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

Sunday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.

Monday

A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 77. Chance of precipitation is 80%.

Monday Night

Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 44. Chance of precipitation is 80%.

Tuesday

Sunny, with a high near 58.

Tuesday Night

Mostly clear, with a low around 38.

Wednesday

A chance of showers. Partly sunny, with a high near 58. Chance of precipitation is 30%.