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Late January Extreme Cold; Watching East Coast Storm Threat This Weekend

The next blast of Arctic air surges south down the Plains, across the Great Lakes and through the Southeast and East Friday through Saturday. This could be longest duration of cold in several decades. Forecast models are being closely monitored for potential of another significant winter storm to impact the eastern United States this coming weekend. Confidence in coastal impacts has increased. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

22°F

-6°C

Humidity 50%
Wind Speed NW 10 G 21 mph
Barometer 30.17 in (1022.1 mb)
Dewpoint 6°F (-14°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 27 Jan 11:52 pm EST
Extended Forecast for

Chantilly VA

Cold Weather Advisory January 28, 07:00pm until January 29, 11:00am
Cold Weather Advisory January 28, 12:39am until January 28, 11:00am
Click here for hazard details and duration
Cold Weather Advisory
Cold Weather Advisory
  •  
    Cold Weather Advisory January 28, 12:39am until January 28, 11:00am

    NOW until 11:00am Wed

    Cold Weather Advisory

  • Overnight

    Low: 8 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Increasing clouds, with a high near 23. Wind chill values as low as -2. Northwest wind 5 to 8 mph.

    High: 23 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 4. Wind chill values as low as -4. Calm wind becoming northwest around 5 mph after midnight.

    Low: 4 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 24. Wind chill values as low as -5. Northwest wind 5 to 9 mph.

    High: 24 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 7. Northwest wind around 6 mph.

    Low: 7 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 21.

    High: 21 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 6.

    Low: 6 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of snow. Partly sunny, with a high near 18. Chance of precipitation is 30%.

    High: 18 °F

    Chance Snow

Detailed Forecast

Overnight
Partly cloudy, with a low around 8. Wind chill values as low as -2. Northwest wind around 8 mph.
Wednesday
Increasing clouds, with a high near 23. Wind chill values as low as -2. Northwest wind 5 to 8 mph.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 4. Wind chill values as low as -4. Calm wind becoming northwest around 5 mph after midnight.
Thursday
Sunny, with a high near 24. Wind chill values as low as -5. Northwest wind 5 to 9 mph.
Thursday Night
Partly cloudy, with a low around 7. Northwest wind around 6 mph.
Friday
Partly sunny, with a high near 21.
Friday Night
Mostly cloudy, with a low around 6.
Saturday
A chance of snow. Partly sunny, with a high near 18. Chance of precipitation is 30%.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 12. Chance of precipitation is 40%.
Sunday
A chance of snow before 1pm. Partly sunny, with a high near 25. Blustery. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 15.
Monday
Mostly sunny, with a high near 33.
Monday Night
Partly cloudy, with a low around 16.
Tuesday
Mostly sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chantilly VA
 38.88°N 77.43°W (Elev. 299 ft)
Last Update:
9:53 pm EST Jan 27, 2026
Forecast Valid:
12am EST Jan 28, 2026-6pm EST Feb 3, 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