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.

Overcast

75°F

24°C

Humidity	79%
Wind Speed	SE 8 mph
Barometer	29.87 in (1011.2 mb)
Dewpoint	68°F (20°C)
Visibility	10.00 mi
Last update	2 Aug 4:52 am EDT

More Information:

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

Extended Forecast for

2 Miles NW Chantilly VA

Overnight
Low: 72 °F
Slight Chance
Showers
Sunday
High: 85 °F
Showers
Likely
Sunday Night
Low: 71 °F
Showers
Monday
High: 87 °F
Mostly Cloudy
then Showers
Likely
Monday Night
Low: 69 °F
Showers
Likely 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
Mostly Cloudy

Detailed Forecast

Overnight

A slight chance of showers. Mostly cloudy, with a low around 72. South wind around 8 mph. Chance of precipitation is 20%.

Sunday

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 around 10 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.

Sunday Night

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 through mid morning, then gradual clearing, with a high near 87. Southwest wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Monday Night

Showers and thunderstorms likely 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 60%.

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. 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 90. Chance of precipitation is 30%.

Thursday Night

A chance of showers and thunderstorms. 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%.