Severe Weather and Heavy Rainfall from the Midwest to the Ohio Valley; Mid-Summer Heat Continues

Severe thunderstorm and heavy rainfall threats will persist from the Midwest to Lower Great Lakes through Monday, shifting into the Ohio Valley and Central Appalachians Monday evening into Tuesday. Mid-summer heat will continue across much of the CONUS this week, with record highs possible well into the 100s across the south-central High Plains. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

A Few Clouds

81°F

27°C

Humidity	72%
Wind Speed	S 5 mph
Barometer	30.01 in (1015.7 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Heat Index	85°F (29°C)
Last update	9 Aug 8:52 pm EDT

More Information:

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

Extended Forecast for

2 Miles ESE Great Falls VA

Tonight
Low: 72 °F
Mostly Clear
Monday
High: 92 °F
Sunny then
Chance
T-storms
Monday Night
Low: 74 °F
Chance
T-storms then
Mostly Cloudy
Tuesday
High: 88 °F
Slight Chance
Showers then
Showers
Likely
Tuesday Night
Low: 70 °F
Showers
Likely
Wednesday
High: 87 °F
Partly Sunny
then Chance
T-storms
Wednesday Night
Low: 70 °F
Chance
T-storms then
Chance
Showers
Thursday
High: 88 °F
Mostly Sunny
then Slight
Chance
T-storms
Thursday Night
Low: 69 °F
Partly Cloudy

Detailed Forecast

Tonight

Mostly clear, with a low around 72. Calm wind.

Monday

A chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 92. Calm wind becoming southwest 5 to 8 mph in the afternoon. Chance of precipitation is 30%.

Monday Night

A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 74. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

Tuesday

A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 88. West wind 3 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 70. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

Wednesday

A slight chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 40%.

Wednesday Night

A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.

Thursday

A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 20%.

Thursday Night

Partly cloudy, with a low around 69.

Friday

A slight chance of showers after 2pm. Mostly sunny, with a high near 82. Chance of precipitation is 20%.

Friday Night

A slight chance of showers. Partly cloudy, with a low around 66. Chance of precipitation is 20%.

Saturday

A slight chance of showers. Mostly sunny, with a high near 81. Chance of precipitation is 20%.

Saturday Night

A slight chance of showers. Partly cloudy, with a low around 66. Chance of precipitation is 20%.

Sunday

A chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 30%.