Areas of Severe Thunderstorms and Excessive Rainfall Friday

Severe thunderstorms capable of large hail and damaging wind gusts appear possible over the central and southern High Plains and eastern Kansas into Missouri Friday afternoon and evening. Rounds of storms Friday ahead of a slow moving frontal boundary will bring locally heavy rainfall and scattered flash flooding potential to the Mid-Mississippi, Ohio, and Tennessee Valleys, and the Appalachians. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Partly Cloudy

73°F

23°C

Humidity	96%
Wind Speed	S 3 mph
Barometer	29.87 in (1011.3 mb)
Dewpoint	72°F (22°C)
Visibility	7.00 mi
Last update	9 Jul 11:52 pm EDT

More Information:

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

Extended Forecast for

Herndon VA

Overnight
Low: 70 °F
Patchy Fog
Friday
High: 89 °F
Mostly Sunny
then
Scattered
T-storms
Friday Night
Low: 70 °F
Scattered
T-storms then
Isolated
Showers
Saturday
High: 84 °F
Chance
Showers then
Showers
Likely
Saturday Night
Low: 66 °F
Showers
Likely then
Slight Chance
Showers
Sunday
High: 84 °F
Partly Sunny
Sunday Night
Low: 65 °F
Partly Cloudy
Monday
High: 84 °F
Mostly Sunny
Monday Night
Low: 64 °F
Partly Cloudy

Detailed Forecast

Overnight

Patchy fog after 1am. Otherwise, partly cloudy, with a low around 70. West wind 3 to 5 mph.

Friday

Scattered showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 89. West wind 3 to 7 mph. Chance of precipitation is 30%.

Friday Night

Scattered showers and thunderstorms before 2am, then isolated showers between 2am and 5am. Mostly cloudy, with a low around 70. Light and variable wind. Chance of precipitation is 30%.

Saturday

Scattered showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 84. Northwest wind 3 to 7 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday Night

Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 66. Light north wind. Chance of precipitation is 60%.

Sunday

Partly sunny, with a high near 84.

Sunday Night

Partly cloudy, with a low around 65.

Monday

Mostly sunny, with a high near 84.

Monday Night

Partly cloudy, with a low around 64.

Tuesday

Sunny, with a high near 88.

Tuesday Night

Mostly clear, with a low around 68.