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.

Mostly Cloudy

70°F

21°C

Humidity 73%
Wind Speed S 8 mph
Barometer 30.13 in (1020.1 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 17 May 8:52 am EDT
Extended Forecast for

Mc Lean VA

  • Today

    Today: Isolated showers, then scattered showers and thunderstorms after 5pm. Partly sunny, with a high near 90. West wind 3 to 5 mph. Chance of precipitation is 30%.

    High: 90 °F

    Scattered
    Showers

  • Tonight

    Tonight: Scattered showers and thunderstorms before 8pm. Partly cloudy, with a low around 66. Light south wind. Chance of precipitation is 30%.

    Low: 66 °F

    Scattered
    Showers then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 94. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 72. South wind around 8 mph.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. Southwest wind 5 to 8 mph.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm after 2pm. High near 95. Chance of precipitation is 80%.

    High: 95 °F

    Sunny then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 62. Chance of precipitation is 80%.

    Low: 62 °F

    Showers then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers after 8am. Mostly cloudy, with a high near 72. Chance of precipitation is 40%.

    High: 72 °F

    Chance
    Showers

Detailed Forecast

Today
Isolated showers, then scattered showers and thunderstorms after 5pm. Partly sunny, with a high near 90. West wind 3 to 5 mph. Chance of precipitation is 30%.
Tonight
Scattered showers and thunderstorms before 8pm. Partly cloudy, with a low around 66. Light south wind. Chance of precipitation is 30%.
Monday
Sunny, with a high near 94. Calm wind becoming south 5 to 8 mph in the afternoon.
Monday Night
Mostly clear, with a low around 72. South wind around 8 mph.
Tuesday
Sunny, with a high near 96. Southwest wind 5 to 8 mph.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Showers and possibly a thunderstorm after 2pm. High near 95. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 62. Chance of precipitation is 80%.
Thursday
A chance of showers after 8am. Mostly cloudy, with a high near 72. Chance of precipitation is 40%.
Thursday Night
A chance of showers after 2am. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.
Friday
Showers likely. Mostly cloudy, with a high near 67. Chance of precipitation is 60%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 40%.
Saturday
A chance of showers. Mostly cloudy, with a high near 71. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mc Lean VA
 38.95°N 77.19°W (Elev. 253 ft)
Last Update:
9:10 am EDT May 17, 2026
Forecast Valid:
10am EDT May 17, 2026-6pm EDT May 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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