Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28° N Lon: 74.82° W Elev: 210 ft.

Overcast

29°F

-2°C

Humidity 63%
Wind Speed S 7 mph
Barometer 29.97 in (1014.5 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 9 Dec 8:53 pm EST
Detailed forecast for

Mercer County

Tonight
Mostly cloudy and not as cold. Near steady temperature in the upper 20s. Southwest winds 5 to 10 mph.
Wednesday
Mostly cloudy. A slight chance of rain in the morning, then rain in the afternoon. Not as cool with highs in the mid 40s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 90 percent.
Wednesday Night
Mostly cloudy with a chance of rain in the evening, then partly cloudy after midnight. Cold with lows in the upper 20s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent.
Thursday
Mostly sunny. Highs in the upper 30s. West winds around 15 mph with gusts up to 30 mph.
Thursday Night
Mostly clear in the evening, then becoming partly cloudy. Cold with lows in the mid 20s. West winds 10 to 15 mph with gusts up to 25 mph.
Friday
Mostly sunny. Highs in the upper 30s.
Friday Night
Mostly cloudy with a 40 percent chance of snow. Cold with lows in the mid 20s.
Saturday
Mostly cloudy. Highs around 40.
Saturday Night
Mostly cloudy. A chance of snow after midnight. Cold with lows in the mid 20s. Chance of snow 40 percent.
Sunday
Partly sunny. A chance of snow in the morning. Highs in the mid 30s. Temperature falling to around 30 in the afternoon. Chance of snow 40 percent.
Sunday Night
Partly cloudy in the evening, then becoming mostly clear. Colder with lows 15 to 20.
Monday
Mostly sunny. Cold with highs in the lower 30s.
Monday Night
Mostly cloudy. Cold with lows around 20.
Tuesday
Mostly sunny. Highs in the mid 30s.



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400 PM EST Tue Dec 9 2025
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database