Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. 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

77°F

25°C

Humidity	82%
Wind Speed	Calm
Barometer	29.97 in (1015.1 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Heat Index	79°F (26°C)
Last update	27 Aug 9:56 pm EDT

More Information:

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

Extended Forecast for

3 Miles SSE Manassas Park VA

Tonight
Low: 68 °F
Showers
Likely then
Scattered
Showers and
Patchy Fog
Friday
High: 87 °F
Patchy Fog
then Slight
Chance
T-storms
Friday Night
Low: 67 °F
Slight Chance
T-storms then
Slight Chance
Showers
Saturday
High: 87 °F
Mostly Sunny
Saturday Night
Low: 68 °F
Mostly Clear
Sunday
High: 89 °F
Sunny
Sunday Night
Low: 70 °F
Partly Cloudy
Monday
High: 92 °F
Sunny
Monday Night
Low: 73 °F
Partly Cloudy

Detailed Forecast

Tonight

Showers likely and possibly a thunderstorm before 11pm, then scattered showers and thunderstorms between 11pm and 2am, then isolated showers after 2am. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 68. South 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.

Friday

A slight chance of showers before 2pm, then a slight chance of showers and thunderstorms between 2pm and 3pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 20%.

Friday Night

A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 20%.

Saturday

Mostly sunny, with a high near 87. North wind around 5 mph becoming light and variable in the afternoon.

Saturday Night

Mostly clear, with a low around 68. Light south wind.

Sunday

Sunny, with a high near 89.

Sunday Night

Partly cloudy, with a low around 70.

Monday

Sunny, with a high near 92.

Monday Night

Partly cloudy, with a low around 73.