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 >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Washington Manassas Airport (KHEF)

Lat: 38.72°NLon: 77.52°WElev: 194ft.

Mostly Cloudy

83°F

28°C

Humidity	55%
Wind Speed	Vrbl 5 mph
Barometer	30.11 in (1019.8 mb)
Dewpoint	65°F (18°C)
Visibility	10.00 mi
Heat Index	85°F (29°C)
Last update	4 Aug 11:56 am EDT

More Information:

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

Extended Forecast for

2 Miles ESE Marshall VA

This Afternoon
High: 84 °F
Partly Sunny
Tonight
Low: 67 °F
Chance
Showers then
Showers
Likely and
Patchy Fog
Wednesday
High: 83 °F
Showers
Likely and
Patchy Fog
Wednesday Night
Low: 69 °F
Chance
T-storms then
Partly Cloudy
Thursday
High: 88 °F
Mostly Sunny
then Chance
T-storms
Thursday Night
Low: 69 °F
Chance
T-storms then
Partly Cloudy
Friday
High: 88 °F
Mostly Sunny
then Showers
Likely
Friday Night
Low: 68 °F
Showers
Likely then
Chance
T-storms
Saturday
High: 87 °F
Mostly Sunny
then Showers
Likely

Detailed Forecast

This Afternoon

Partly sunny, with a high near 84. East wind around 5 mph.

Tonight

A chance of showers and thunderstorms, then showers likely after 2am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 67. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday

Showers and thunderstorms likely, mainly before 3pm, then showers likely and possibly a thunderstorm after 4pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 83. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday Night

A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 69. South wind 3 to 6 mph. Chance of precipitation is 30%.

Thursday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. South wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

Thursday Night

A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. Chance of precipitation is 30%.

Friday

Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 60%.

Friday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.

Saturday

Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.

Saturday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.

Sunday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 20%.

Sunday Night

Partly cloudy, with a low around 69.

Monday

Sunny, with a high near 90.