Heavy Rainfall for Portions of the West and Southern Plains; Dangerous Heat for the Northwest

Monsoonal flow coinciding with a frontal boundary will focus more showers and thunderstorms across the central Great Basin, central Rockies, Southwest into the Southern Plains. Heavy rainfall may bring about instances of flash flooding. Meanwhile, record setting heat continues for the Pacific Northwest through Monday. Heat combining with dry conditions could allow for any fires to quickly spread. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Light Rain

79°F

26°C

Humidity	60%
Wind Speed	SW 3 mph
Barometer	29.85 in (1010.6 mb)
Dewpoint	64°F (18°C)
Visibility	10.00 mi
Heat Index	81°F (27°C)
Last update	24 Aug 5:52 pm EDT

More Information:

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

Extended Forecast for

Fairfax VA

Tonight
Low: 66 °F
Slight Chance
T-storms then
Partly Cloudy
Monday
High: 82 °F
Sunny
Monday Night
Low: 60 °F
Increasing
Clouds
Tuesday
High: 78 °F
Mostly Sunny
Tuesday Night
Low: 59 °F
Partly Cloudy
Wednesday
High: 76 °F
Sunny
Wednesday Night
Low: 56 °F
Partly Cloudy
Thursday
High: 78 °F
Partly Sunny
Thursday Night
Low: 60 °F
Partly Cloudy

Detailed Forecast

Tonight

A slight chance of showers and thunderstorms before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 66. South wind around 6 mph becoming calm after midnight. Chance of precipitation is 20%.

Monday

Sunny, with a high near 82. Northwest wind 7 to 10 mph.

Monday Night

Increasing clouds, with a low around 60. Northwest wind 5 to 7 mph.

Tuesday

Mostly sunny, with a high near 78. West wind 5 to 9 mph.

Tuesday Night

Partly cloudy, with a low around 59. Northwest wind around 6 mph.

Wednesday

Sunny, with a high near 76.

Wednesday Night

Partly cloudy, with a low around 56.