Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. 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.

Mostly Cloudy

76°F

24°C

Humidity	82%
Wind Speed	S 9 mph
Barometer	29.86 in (1010.9 mb)
Dewpoint	70°F (21°C)
Visibility	10.00 mi
Heat Index	77°F (25°C)
Last update	2 Aug 7:52 am EDT

More Information:

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

Extended Forecast for

2 Miles NW Sterling VA

Today
High: 85 °F
Showers
Likely
Tonight
Low: 71 °F
Showers
Monday
High: 87 °F
Mostly Cloudy
then Showers
Likely
Monday Night
Low: 69 °F
Chance
T-storms then
Chance
Showers
Tuesday
High: 86 °F
Partly Sunny
then Chance
Showers
Tuesday Night
Low: 70 °F
Chance
Showers
Wednesday
High: 88 °F
Partly Sunny
then Chance
T-storms
Wednesday Night
Low: 72 °F
Chance
T-storms then
Partly Cloudy
Thursday
High: 89 °F
Mostly Sunny
then Chance
T-storms

Detailed Forecast

Today

A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 85. Southeast wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Tonight

Showers and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms, mainly between 2am and 5am. Low around 71. Southeast wind around 8 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Monday

A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 87. West wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Monday Night

A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 69. Light and variable wind. Chance of precipitation is 30%.

Tuesday

A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 86. East wind 3 to 6 mph. Chance of precipitation is 40%.

Tuesday Night

A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.

Wednesday

A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 40%.

Wednesday Night

A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.

Thursday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.

Thursday Night

A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 72. Chance of precipitation is 30%.

Friday

A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 50%.

Friday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.