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.

A Few Clouds

51°F

11°C

Humidity 43%
Wind Speed SW 9 mph
Barometer 29.82 in (1009.7 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 14 Mar 12:52 am EDT
Extended Forecast for

3 Miles WNW Catharpin VA

  • Overnight

    Overnight: Mostly clear, with a low around 41. West wind around 10 mph, with gusts as high as 21 mph.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 56. Northwest wind 6 to 14 mph, with gusts as high as 26 mph.

    High: 56 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 37. North wind around 5 mph becoming calm in the evening.

    Low: 37 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 58. Southeast wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 58 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain. Low around 52. Southeast wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.

    Low: 52 °F

    Rain

  • Monday

    Monday: Showers likely, then showers and possibly a thunderstorm after 11am. High near 68. Breezy. Chance of precipitation is 100%.

    High: 68 °F

    Breezy.
    Showers
    Likely then
    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 29. Breezy. Chance of precipitation is 80%.

    Low: 29 °F

    Showers and
    Breezy then
    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 22.

    Low: 22 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 41. West wind around 10 mph, with gusts as high as 21 mph.
Saturday
Mostly sunny, with a high near 56. Northwest wind 6 to 14 mph, with gusts as high as 26 mph.
Saturday Night
Mostly cloudy, with a low around 37. North wind around 5 mph becoming calm in the evening.
Sunday
Mostly cloudy, with a high near 58. Southeast wind 6 to 14 mph, with gusts as high as 24 mph.
Sunday Night
Rain. Low around 52. Southeast wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.
Monday
Showers likely, then showers and possibly a thunderstorm after 11am. High near 68. Breezy. Chance of precipitation is 100%.
Monday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 29. Breezy. Chance of precipitation is 80%.
Tuesday
Partly sunny, with a high near 38.
Tuesday Night
Mostly clear, with a low around 22.
Wednesday
Partly sunny, with a high near 43.
Wednesday Night
Mostly cloudy, with a low around 30.
Thursday
Partly sunny, with a high near 54.
Thursday Night
Partly cloudy, with a low around 36.
Friday
Partly sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Catharpin VA
 38.86°N 77.63°W (Elev. 400 ft)
Last Update:
10:53 pm EDT Mar 13, 2026
Forecast Valid:
1am EDT Mar 14, 2026-6pm EDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation