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

68°F

20°C

Humidity 87%
Wind Speed NE 14 mph
Barometer 30.00 in (1015.9 mb)
Dewpoint 64°F (18°C)
Visibility 7.00 mi
Last update 17 Sep 12:52 pm EDT
Extended Forecast for

Mc Lean VA

  • This Afternoon

    This Afternoon: A chance of showers, mainly before 5pm. Patchy fog between 2pm and 3pm. Otherwise, cloudy, with a high near 67. North wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.

    High: 67 °F

    Chance
    Showers and
    Patchy Fog

  • Tonight

    Tonight: A slight chance of showers between 7pm and 10pm. Patchy fog before 7pm, then patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 63. North wind 3 to 7 mph. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Patchy
    Fog

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 82. North wind 3 to 5 mph.

    High: 82 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61. Light southwest wind.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 86. Northwest wind around 6 mph.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 62.

    Low: 62 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 77.

    High: 77 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A chance of showers, mainly before 5pm. Patchy fog between 2pm and 3pm. Otherwise, cloudy, with a high near 67. North wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
Tonight
A slight chance of showers between 7pm and 10pm. Patchy fog before 7pm, then patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 63. North wind 3 to 7 mph. Chance of precipitation is 20%.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 82. North wind 3 to 5 mph.
Thursday Night
Mostly clear, with a low around 61. Light southwest wind.
Friday
Sunny, with a high near 86. Northwest wind around 6 mph.
Friday Night
Partly cloudy, with a low around 63.
Saturday
Mostly sunny, with a high near 79.
Saturday Night
Mostly cloudy, with a low around 62.
Sunday
Mostly cloudy, with a high near 77.
Sunday Night
Partly cloudy, with a low around 61.
Monday
Mostly sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Partly sunny, with a high near 82.
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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:
1:31 pm EDT Sep 17, 2025
Forecast Valid:
1pm EDT Sep 17, 2025-6pm EDT Sep 23, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation