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

Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

15°F

-9°C

Humidity 46%
Wind Speed SW 5 mph
Barometer 30.48 in (1031.9 mb)
Dewpoint -2°F (-19°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 20 Jan 8:53 pm EST
Extended Forecast for

Trenton NJ

  • Tonight

    Tonight: Mostly clear, with a low around 5. West wind around 5 mph becoming calm in the evening.

    Low: 5 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 34. Light south wind increasing to 10 to 15 mph in the morning.

    High: 34 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Cloudy, then gradually becoming partly cloudy, with a low around 29. Southwest wind 5 to 10 mph.

    Low: 29 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 44. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 44 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 24. West wind around 5 mph becoming calm in the evening.

    Low: 24 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 9.

    Low: 9 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 18.

    High: 18 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Snow likely, mainly after 1am. Cloudy, with a low around 11. Chance of precipitation is 60%.

    Low: 11 °F

    Chance Snow
    then Snow
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 5. West wind around 5 mph becoming calm in the evening.
Wednesday
Increasing clouds, with a high near 34. Light south wind increasing to 10 to 15 mph in the morning.
Wednesday Night
Cloudy, then gradually becoming partly cloudy, with a low around 29. Southwest wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 44. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 24. West wind around 5 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 33.
Friday Night
Mostly cloudy, with a low around 9.
Saturday
Partly sunny, with a high near 18.
Saturday Night
Snow likely, mainly after 1am. Cloudy, with a low around 11. Chance of precipitation is 60%.
Sunday
Snow likely. Cloudy, with a high near 20. Chance of precipitation is 70%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 8. Chance of precipitation is 50%.
Monday
A chance of snow. Partly sunny, with a high near 24. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 8.
Tuesday
Mostly sunny, with a high near 25.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Trenton NJ
 40.23°N 74.78°W (Elev. 33 ft)
Last Update:
4:10 pm EST Jan 20, 2026
Forecast Valid:
9pm EST Jan 20, 2026-6pm EST Jan 27, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation