Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Washington Manassas Airport (KHEF)

Lat: 38.72°NLon: 77.52°WElev: 194ft.

A Few Clouds

67°F

19°C

Humidity	97%
Wind Speed	S 6 mph
Barometer	29.86 in (1011.5 mb)
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Last update	23 Aug 1:56 am EDT

More Information:

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

Extended Forecast for

Loch Lomond VA

Overnight
Low: 66 °F
Chance
Showers and
Patchy Fog
Sunday
High: 84 °F
Becoming
Sunny
Sunday Night
Low: 60 °F
Mostly Clear
Monday
High: 83 °F
Sunny
Monday Night
Low: 59 °F
Clear
Tuesday
High: 84 °F
Sunny
Tuesday Night
Low: 61 °F
Mostly Clear
Wednesday
High: 88 °F
Mostly Sunny
Wednesday Night
Low: 66 °F
Partly Cloudy
then Slight
Chance
T-storms

Detailed Forecast

Overnight

A chance of showers before 3am. Patchy fog. Otherwise, mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 30%.

Sunday

Partly sunny, then gradually becoming sunny, with a high near 84. Light west wind becoming northwest 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

Sunday Night

Mostly clear, with a low around 60. West wind around 5 mph becoming calm in the evening.

Monday

Sunny, with a high near 83. Calm wind becoming west 5 to 7 mph in the morning.

Monday Night

Clear, with a low around 59. Northwest wind around 6 mph becoming calm in the evening.

Tuesday

Sunny, with a high near 84.

Tuesday Night

Mostly clear, with a low around 61.

Wednesday

Mostly sunny, with a high near 88.

Wednesday Night

A slight chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 66. Chance of precipitation is 20%.

Thursday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.

Thursday Night

Showers and thunderstorms likely. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

Friday

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

Friday Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 20%.

Saturday

Mostly sunny, with a high near 87.