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

Early Heat Wave in the West; Fire Concerns in the 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. Elevated to critical fire weather conditions are expected today across the High Plains and southern Plains. Lake effect snow downwind of the Great Lakes will taper off today. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

31°F

-1°C

Humidity 49%
Wind Speed W 16 G 31 mph
Barometer 29.85 in (1011.0 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 17 Mar 5:52 am EDT
Extended Forecast for

5 Miles NW Catharpin VA

  • Today

    Today: Increasing clouds, with a high near 41. West wind 10 to 14 mph, with gusts as high as 25 mph.

    High: 41 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 24. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 42. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 42 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 28. South wind around 6 mph.

    Low: 28 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 53. South wind around 6 mph.

    High: 53 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of rain before 2am. Mostly cloudy, with a low around 44. Chance of precipitation is 30%.

    Low: 44 °F

    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 41. West wind 10 to 14 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 24. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 42. Calm wind becoming south 5 to 7 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 28. South wind around 6 mph.
Thursday
Partly sunny, with a high near 53. South wind around 6 mph.
Thursday Night
Partly cloudy, with a low around 35.
Friday
Partly sunny, with a high near 61.
Friday Night
A chance of rain before 2am. Mostly cloudy, with a low around 44. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 63.
Saturday Night
Partly cloudy, with a low around 45.
Sunday
Partly sunny, with a high near 69.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 41. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 55.
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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:
4:53 am EDT Mar 17, 2026
Forecast Valid:
6am EDT Mar 17, 2026-6pm EDT Mar 23, 2026
 
Forecast Discussion
 
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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