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

Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

A Few Clouds

33°F

1°C

Humidity 36%
Wind Speed Calm
Barometer 30.43 in (1030.8 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Last update 18 Mar 11:52 am EDT
Extended Forecast for

5 Miles NW Catharpin VA

  • This Afternoon

    This Afternoon: Sunny, with a high near 42. Calm wind becoming south around 6 mph.

    High: 42 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 30. South wind around 6 mph.

    Low: 30 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 53. South wind around 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 showers after 2pm. Partly sunny, with a high near 61. Calm wind becoming south 5 to 8 mph in the afternoon. Chance of precipitation is 20%.

    High: 61 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers, mainly after 8pm. Mostly cloudy, with a low around 48. Chance of precipitation is 50%.

    Low: 48 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

  • Saturday Night

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

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers after 2pm. Partly sunny, with a high near 73. Chance of precipitation is 30%.

    High: 73 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 42. Calm wind becoming south around 6 mph.
Tonight
Partly cloudy, with a low around 30. South wind around 6 mph.
Thursday
Mostly sunny, with a high near 53. South wind around 7 mph.
Thursday Night
Mostly cloudy, with a low around 38. Light and variable wind.
Friday
A slight chance of showers after 2pm. Partly sunny, with a high near 61. Calm wind becoming south 5 to 8 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
A chance of showers, mainly after 8pm. Mostly cloudy, with a low around 48. Chance of precipitation is 50%.
Saturday
Partly sunny, with a high near 69.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
A chance of showers after 2pm. Partly sunny, with a high near 73. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 45. Chance of precipitation is 30%.
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
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NW Catharpin VA
 38.9°N 77.62°W (Elev. 348 ft)
Last Update:
12:00 pm EDT Mar 18, 2026
Forecast Valid:
12pm EDT Mar 18, 2026-6pm EDT Mar 24, 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