Severe Thunderstorms for Mid-Atlantic and Northeast; Typhoon Approaching Guam

A cold front will sweep eastward today accompanied by strong to severe thunderstorms for the mid-Atlantic and Northeast today. In the wake of this cold front, autumn like temperatures and gusty winds from the Plains, Mississippi Valley, Great Lakes to most of the eastern seaboard. Fire weather conditions for lower Mississippi Valley into portions of California. For Guam, a typhoon is approaching. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Fog/Mist

65°F

18°C

Humidity	93%
Wind Speed	SW 9 mph
Barometer	29.89 in (1012.0 mb)
Dewpoint	63°F (17°C)
Visibility	4.00 mi
Last update	16 Oct 9:52 am EDT

More Information:

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

Extended Forecast for

Herndon VA

Today
High: 82 °F
Cloudy then
Showers
Likely
Tonight
Low: 49 °F
Showers then
Chance
Showers
Saturday
High: 54 °F
Chance
Showers then
Mostly Sunny
and Breezy
Saturday Night
Low: 35 °F
Clear
Sunday
High: 56 °F
Sunny
Sunday Night
Low: 38 °F
Mostly Clear
Monday
High: 59 °F
Mostly Sunny
Monday Night
Low: 43 °F
Partly Cloudy
Tuesday
High: 65 °F
Sunny

Detailed Forecast

Today

Showers likely and possibly a thunderstorm after 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 82. South wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and possibly a thunderstorm before 3am, then a chance of showers. Low around 49. Northwest wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

A chance of showers, mainly before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 54. Breezy, with a north wind 17 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.

Saturday Night

Clear, with a low around 35. North wind 6 to 10 mph.

Sunday

Sunny, with a high near 56. Northeast wind around 6 mph.

Sunday Night

Mostly clear, with a low around 38.

Monday

Mostly sunny, with a high near 59.

Monday Night

Partly cloudy, with a low around 43.

Tuesday

Sunny, with a high near 65.