National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Washington/Reagan National Airport, DC (KDCA)

Lat: 38.85°NLon: 77.03°WElev: 13ft.

Overcast

80°F

27°C

Humidity 74%
Wind Speed NE 9 mph
Barometer 30.14 in (1020.5 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 12 Jul 10:52 am EDT
Extended Forecast for

Mc Lean VA

  • Today

    Today: A chance of showers and thunderstorms, mainly after 2pm. Mostly cloudy, with a high near 83. East wind 7 to 9 mph. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    T-storms

  • Tonight

    Tonight: Mostly cloudy, with a low around 66. Southeast wind 5 to 7 mph becoming calm in the evening.

    Low: 66 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 82. East wind 3 to 8 mph.

    High: 82 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64. Light and variable wind.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. Light and variable wind.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 70.

    Low: 70 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly after 2pm. Mostly cloudy, with a high near 83. East wind 7 to 9 mph. Chance of precipitation is 30%.
Tonight
Mostly cloudy, with a low around 66. Southeast wind 5 to 7 mph becoming calm in the evening.
Monday
Partly sunny, with a high near 82. East wind 3 to 8 mph.
Monday Night
Mostly clear, with a low around 64. Light and variable wind.
Tuesday
Sunny, with a high near 89. Light and variable wind.
Tuesday Night
Clear, with a low around 70.
Wednesday
Sunny, with a high near 96.
Wednesday Night
Mostly clear, with a low around 75.
Thursday
Sunny, with a high near 93.
Thursday Night
Partly cloudy, with a low around 72.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 20%.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mc Lean VA
 38.95°N 77.19°W (Elev. 253 ft)
Last Update:
10:52 am EDT Jul 12, 2026
Forecast Valid:
11am EDT Jul 12, 2026-6pm EDT Jul 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation