Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Current conditions at

Washington Manassas Airport (KHEF)

Lat: 38.72°NLon: 77.52°WElev: 194ft.

Fair

84°F

29°C

Humidity	57%
Wind Speed	SE 9 mph
Barometer	30.10 in (1019.5 mb)
Dewpoint	67°F (19°C)
Visibility	10.00 mi
Heat Index	87°F (31°C)
Last update	4 Aug 12:56 pm EDT

More Information:

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

Extended Forecast for

5 Miles WNW Dale City VA

This Afternoon
High: 87 °F
Partly Sunny
Tonight
Low: 70 °F
Chance
Showers then
Showers and
Patchy Fog
Wednesday
High: 87 °F
Showers
Likely and
Patchy Fog
Wednesday Night
Low: 72 °F
Chance
T-storms then
Slight Chance
Showers
Thursday
High: 91 °F
Mostly Sunny
Thursday Night
Low: 73 °F
Partly Cloudy
Friday
High: 91 °F
Mostly Sunny
then Chance
T-storms
Friday Night
Low: 71 °F
Chance
T-storms
Saturday
High: 91 °F
Mostly Sunny
then Chance
T-storms

Detailed Forecast

This Afternoon

Partly sunny, with a high near 87. East wind around 6 mph.

Tonight

Showers and thunderstorms likely before 4am, then showers and possibly a thunderstorm between 4am and 5am, then showers likely after 5am. Patchy fog after 4am. Low around 70. Light east wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday

Showers and thunderstorms likely before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 87. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 72. South wind 3 to 5 mph. Chance of precipitation is 30%.

Thursday

Mostly sunny, with a high near 91. South wind 7 to 10 mph, with gusts as high as 21 mph.

Thursday Night

Partly cloudy, with a low around 73.

Friday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 40%.

Friday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.

Saturday

A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 91. Chance of precipitation is 50%.

Saturday Night

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