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

27°F

-3°C

Humidity 49%
Wind Speed NW 6 mph
Barometer 30.37 in (1028.2 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 18 Mar 4:52 am EDT
Extended Forecast for

Mc Lean VA

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 43. Calm wind becoming south around 6 mph in the afternoon.

    High: 43 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 31. Southeast wind 3 to 5 mph.

    Low: 31 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 53. South wind 3 to 7 mph.

    High: 53 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 38. Light and variable wind.

    Low: 38 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of rain after 2pm. Partly sunny, with a high near 61. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 61 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: A chance of rain, mainly after 8pm. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.

    Low: 49 °F

    Chance Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of rain after 2pm. Partly sunny, with a high near 72. Chance of precipitation is 30%.

    High: 72 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 43. Calm wind becoming south around 6 mph in the afternoon.
Tonight
Partly cloudy, with a low around 31. Southeast wind 3 to 5 mph.
Thursday
Mostly sunny, with a high near 53. South wind 3 to 7 mph.
Thursday Night
Mostly cloudy, with a low around 38. Light and variable wind.
Friday
A slight chance of rain after 2pm. Partly sunny, with a high near 61. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
A chance of rain, mainly after 8pm. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
A chance of rain after 2pm. Partly sunny, with a high near 72. Chance of precipitation is 30%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 56.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Partly sunny, with a high near 50.
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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:
4:53 am EDT Mar 18, 2026
Forecast Valid:
5am EDT Mar 18, 2026-6pm EDT Mar 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation