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

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Overcast

36°F

2°C

Humidity 59%
Wind Speed S 6 mph
Barometer 30.30 in (1026.2 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 19 Mar 1:52 am EDT
Extended Forecast for

3 Miles NNW Mc Lean VA

  • Overnight

    Overnight: Mostly cloudy, with a low around 32. Southeast wind around 5 mph.

    Low: 32 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 55. South wind around 6 mph.

    High: 55 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers after 2pm. Increasing clouds, with a high near 66. Light southwest wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 20%.

    High: 66 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 50. South wind 6 to 9 mph. Chance of precipitation is 60%.

    Low: 50 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers before 8am. Mostly sunny, with a high near 69. Chance of precipitation is 30%.

    High: 69 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of rain. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.

    Low: 47 °F

    Chance Rain

Detailed Forecast

Overnight
Mostly cloudy, with a low around 32. Southeast wind around 5 mph.
Thursday
Partly sunny, with a high near 55. South wind around 6 mph.
Thursday Night
Mostly cloudy, with a low around 39. Calm wind.
Friday
A slight chance of showers after 2pm. Increasing clouds, with a high near 66. Light southwest wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Friday Night
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 50. South wind 6 to 9 mph. Chance of precipitation is 60%.
Saturday
A chance of showers before 8am. Mostly sunny, with a high near 69. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Mostly sunny, with a high near 73.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.
Monday
Partly sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Partly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Partly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Mc Lean VA
 38.98°N 77.24°W (Elev. 98 ft)
Last Update:
2:23 am EDT Mar 19, 2026
Forecast Valid:
2am EDT Mar 19, 2026-6pm EDT Mar 25, 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