Areas of Excessive Rainfall and Severe Thunderstorms on Tuesday

Heavy to excessive rainfall is forecast over north Texas into Oklahoma Tuesday. Locally catastrophic flooding will be possible across portions of southwest Oklahoma. Flood Watches have been issued. Scattered severe thunderstorms are possible within a broad swath from the lower Great Lakes to the southern High Plains Tuesday afternoon into the evening. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Fair

62°F

17°C

Humidity	41%
Wind Speed	S 8 mph
Barometer	30.27 in (1024.7 mb)
Dewpoint	38°F (3°C)
Visibility	10.00 mi
Last update	28 Apr 9:52 pm EDT

More Information:

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

Extended Forecast for

Herndon VA

Tonight
Low: 54 °F
Mostly Clear
Tuesday
High: 85 °F
Sunny
Tuesday Night
Low: 66 °F
Chance
Showers
Wednesday
High: 83 °F
Partly Sunny
then Chance
Showers
Wednesday Night
Low: 61 °F
Chance
Showers
Thursday
High: 83 °F
Partly Sunny
then Chance
T-storms
Thursday Night
Low: 65 °F
Chance
T-storms then
Chance
Showers
Friday
High: 84 °F
Partly Sunny
then Chance
T-storms
Friday Night
Low: 58 °F
Chance
T-storms

Detailed Forecast

Tonight

Mostly clear, with a low around 54. South wind around 7 mph.

Tuesday

Sunny, with a high near 85. South wind 9 to 14 mph, with gusts as high as 26 mph.

Tuesday Night

A chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 66. South wind 7 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.

Wednesday

A slight chance of showers before 8am, then a chance of showers after 2pm. Partly sunny, with a high near 83. Northwest wind around 8 mph. Chance of precipitation is 30%.

Wednesday Night

A chance of showers, mainly before 8pm. Mostly cloudy, with a low around 61. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

Thursday

A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 30%.

Thursday Night

A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.

Friday

A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 50%.

Friday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 50%.

Saturday

A chance of showers before 2pm. Mostly sunny, with a high near 70. Chance of precipitation is 30%.

Saturday Night

Mostly clear, with a low around 48.

Sunday

Sunny, with a high near 71.

Sunday Night

Mostly clear, with a low around 50.