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.

Mostly Cloudy

37°F

3°C

Humidity 96%
Wind Speed N 3 mph
Barometer 29.67 in (1004.8 mb)
Dewpoint 36°F (2°C)
Visibility 7.00 mi
Last update 7 Jan 1:52 am EST
Extended Forecast for

5 Miles NW Catharpin VA

  • Overnight

    Overnight: Patchy fog before 4am. Otherwise, partly cloudy, with a low around 39. Southwest wind around 6 mph.

    Low: 39 °F

    Patchy Fog

  • Wednesday

    Wednesday: Mostly sunny, with a high near 58. South wind 5 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.

    High: 58 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 35. Northwest wind around 6 mph becoming calm in the evening.

    Low: 35 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 56. Calm wind becoming south around 6 mph in the afternoon.

    High: 56 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 42. South wind 6 to 9 mph.

    Low: 42 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of rain. Cloudy, with a high near 62. Chance of precipitation is 50%.

    High: 62 °F

    Chance Rain

  • Friday Night

    Friday Night: Rain likely, mainly after 1am. Cloudy, with a low around 54. Chance of precipitation is 70%.

    Low: 54 °F

    Chance Rain
    then Rain
    Likely

  • Saturday

    Saturday: Rain. High near 65. Chance of precipitation is 90%.

    High: 65 °F

    Rain

  • Saturday Night

    Saturday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 44. Chance of precipitation is 60%.

    Low: 44 °F

    Rain Likely

Detailed Forecast

Overnight
Patchy fog before 4am. Otherwise, partly cloudy, with a low around 39. Southwest wind around 6 mph.
Wednesday
Mostly sunny, with a high near 58. South wind 5 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.
Wednesday Night
Mostly clear, with a low around 35. Northwest wind around 6 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 56. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 42. South wind 6 to 9 mph.
Friday
A chance of rain. Cloudy, with a high near 62. Chance of precipitation is 50%.
Friday Night
Rain likely, mainly after 1am. Cloudy, with a low around 54. Chance of precipitation is 70%.
Saturday
Rain. High near 65. Chance of precipitation is 90%.
Saturday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 44. Chance of precipitation is 60%.
Sunday
A chance of rain before 1pm. Partly sunny, with a high near 50. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 29.
Monday
Sunny, with a high near 42.
Monday Night
Mostly clear, with a low around 26.
Tuesday
Mostly sunny, with a high near 48.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NW Catharpin VA
 38.9°N 77.62°W (Elev. 348 ft)
Last Update:
12:53 am EST Jan 7, 2026
Forecast Valid:
2am EST Jan 7, 2026-6pm EST Jan 13, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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