Heat and Flood Threats for Monday

Dangerous heat will impact portions the Northwest, Northeast, and the Lower Mississippi River Valley Monday. Organized areas of monsoonal showers and thunderstorms may result in flash flooding and debris flows from the Four Corners region into the Southwest. A stalled cold front will lead to unsettled conditions from the Mississippi and Ohio River Valleys to the Northeast through Wednesday. Read More >

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Current conditions at

Washington/Reagan National Airport, DC (KDCA)

Lat: 38.85°NLon: 77.03°WElev: 13ft.

Fair

81°F

27°C

Humidity	77%
Wind Speed	S 9 mph
Barometer	30.11 in (1019.5 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	86°F (30°C)
Last update	8 Aug 12:52 am EDT

More Information:

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

Extended Forecast for

McLean VA

Overnight

Partly Cloudy
Low: 75 °F
Monday

Sunny then
Chance
T-storms
High: 93 °F
Monday
Night

Chance
T-storms then
Slight Chance
Showers
Low: 75 °F
Tuesday

Sunny then
Chance
T-storms
High: 94 °F
Tuesday
Night

Chance
T-storms then
Chance
Showers
Low: 75 °F
Wednesday

Slight Chance
T-storms then
Showers
High: 90 °F
Wednesday
Night

Showers then
Chance
T-storms
Low: 71 °F
Thursday

Chance
Showers
High: 86 °F
Thursday
Night

Mostly Clear
Low: 67 °F

Detailed Forecast

Overnight

Partly cloudy, with a low around 75. South wind around 6 mph.

Monday

A chance of showers and thunderstorms after 2pm. Sunny, with a high near 93. Heat index values as high as 101. Southwest wind 6 to 8 mph. Chance of precipitation is 30%.

Monday Night

A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 75. Southwest wind around 6 mph. Chance of precipitation is 30%.

Tuesday

A chance of showers and thunderstorms after 2pm. Sunny, with a high near 94. Heat index values as high as 102. Southwest wind around 6 mph. Chance of precipitation is 40%.

Tuesday Night

A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 75. West wind around 5 mph becoming calm after midnight. Chance of precipitation is 30%.

Wednesday

A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 90. Chance of precipitation is 80%.

Wednesday Night

Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Low around 71. Chance of precipitation is 80%.

Thursday

A chance of showers before 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 30%.

Thursday Night

Mostly clear, with a low around 67.

Friday

Sunny, with a high near 82.

Friday Night

Mostly clear, with a low around 62.

Saturday

Sunny, with a high near 82.

Saturday Night

Mostly clear, with a low around 62.