Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

Current conditions at

Washington Manassas Airport (KHEF)

Lat: 38.72°NLon: 77.52°WElev: 194ft.

A Few Clouds

86°F

30°C

Humidity	65%
Wind Speed	E 7 mph
Barometer	30.11 in (1020.0 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	93°F (34°C)
Last update	31 Aug 12:56 pm EDT

More Information:

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

Extended Forecast for

Haymarket VA

This Afternoon
High: 90 °F
Chance
Showers
Tonight
Low: 73 °F
Chance
Showers then
Partly Cloudy
Tuesday
High: 95 °F
Mostly Sunny
then Chance
Showers
Tuesday Night
Low: 75 °F
Slight Chance
T-storms
Wednesday
High: 96 °F
Mostly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 75 °F
Slight Chance
T-storms
Thursday
High: 97 °F
Hot
Thursday Night
Low: 72 °F
Chance
T-storms
Friday
High: 89 °F
Chance
Showers

Detailed Forecast

This Afternoon

A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Light north wind. Chance of precipitation is 30%.

Tonight

A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 73. Light south wind. Chance of precipitation is 30%.

Tuesday

A chance of showers, mainly after 4pm. Sunny, with a high near 95. Heat index values as high as 102. West wind 3 to 6 mph. Chance of precipitation is 30%.

Tuesday Night

A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 75. Light west wind. Chance of precipitation is 20%.

Wednesday

A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 96. North wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 20%.

Wednesday Night

A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 75. Chance of precipitation is 20%.

Thursday

Mostly sunny and hot, with a high near 97.

Thursday Night

A chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.

Friday

A slight chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 40%.

Friday Night

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

Saturday

Sunny, with a high near 85.

Saturday Night

Partly cloudy, with a low around 63.

Sunday

Mostly sunny, with a high near 82.