Severe Thunderstorms Tonight in the Mid-Atlantic; Tropical Storm Bertha in the Gulf

Scattered thunderstorms with severe gusts, hail and a tornado risk are possible near a cold front from the Ohio Valley to the Mid-Atlantic tonight. Tropical Storm Bertha is expected to bring tropical storm conditions to portions of the Gulf Coast from the panhandle of Florida into Louisiana through Wednesday. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Light Rain

71°F

22°C

Humidity	94%
Wind Speed	S 9 mph
Barometer	29.76 in (1007.3 mb)
Dewpoint	69°F (21°C)
Visibility	7.00 mi
Last update	21 Jul 10:52 pm EDT

More Information:

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

Extended Forecast for

Dulles VA

Tonight
Low: 71 °F
Showers
Likely and
Patchy Fog
Wednesday
High: 84 °F
Slight Chance
Showers then
Chance
Showers
Wednesday Night
Low: 63 °F
Chance
Showers then
Mostly Cloudy
Thursday
High: 79 °F
Mostly Sunny
Thursday Night
Low: 61 °F
Mostly Clear
Friday
High: 80 °F
Sunny
Friday Night
Low: 64 °F
Mostly Cloudy
then Slight
Chance
Showers
Saturday
High: 80 °F
Slight Chance
Showers
Saturday Night
Low: 65 °F
Partly Cloudy

Detailed Forecast

Tonight

Showers and thunderstorms likely before 2am, then scattered showers between 2am and 5am. Patchy fog between 2am and 3am. Otherwise, mostly cloudy, with a low around 71. Southwest wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday

A slight chance of showers between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. West wind 7 to 10 mph. Chance of precipitation is 50%.

Wednesday Night

A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 9pm. Mostly cloudy, with a low around 63. North wind 7 to 9 mph. Chance of precipitation is 30%.

Thursday

Mostly sunny, with a high near 79. North wind 8 to 10 mph.

Thursday Night

Mostly clear, with a low around 61. Northeast wind around 6 mph becoming calm in the evening.

Friday

Sunny, with a high near 80.

Friday Night

A slight chance of showers after 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 20%.

Saturday

A slight chance of showers before 2pm. Partly sunny, with a high near 80. Chance of precipitation is 20%.

Saturday Night

Partly cloudy, with a low around 65.