Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93° N Lon: 77.45° W Elev: 312 ft.

Fair

19°F

-7°C

Humidity 41%
Wind Speed NW 10 mph
Barometer 30.28 in (1025.6 mb)
Dewpoint -1°F (-18°C)
Visibility 10.00 mi
Wind Chill8°F (-13°C)
Last update 20 Jan 3:52 am EST
Detailed forecast for

Eastern Loudoun

Rest Of The Overnight
Clear. Lows around 14. Northwest winds 10 to 15 mph with gusts up to 25 mph.
Today
Sunny. Highs in the upper 20s. Northwest winds 5 to 10 mph with gusts up to 20 mph.
Tonight
Mostly clear. Cold with lows around 12. Northwest winds around 5 mph, becoming south around 5 mph after midnight.
Wednesday
Mostly sunny. Highs around 40. South winds 5 to 10 mph, increasing to around 15 mph in the afternoon. Gusts up to 30 mph.
Wednesday Night
Mostly cloudy in the evening, then becoming partly cloudy. Lows around 30. South winds 10 to 15 mph with gusts up to 25 mph.
Thursday
Mostly sunny. Highs in the upper 40s.
Thursday Night
Partly cloudy. Lows in the mid 20s.
Friday
Partly sunny. Highs in the upper 30s.
Friday Night
Mostly cloudy. Cold with lows around 10 above. Wind chill values as low as zero.
Saturday
Mostly cloudy with a 40 percent chance of snow. Highs around 20. Wind chill values as low as zero.
Saturday Night
Snow likely. Cold with lows around 10 above. Chance of snow 70 percent.
Sunday
Snow likely. Highs in the lower 20s. Chance of snow 70 percent.
Sunday Night
Partly cloudy with a 40 percent chance of snow. Cold with lows around 10 above. Wind chill values as low as zero.
Monday
Mostly sunny. Highs in the mid 20s. Wind chill values as low as zero.



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356 AM EST Tue Jan 20 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database