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

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Snow Freezing Fog and Breezy

23°F

-5°C

Humidity 85%
Wind Speed NW 21 G 44 mph
Barometer 29.67 in (1004.4 mb)
Dewpoint 19°F (-7°C)
Visibility 0.50 mi
Wind Chill8°F (-13°C)
Last update 1 Jan 6:53 am EST
Extended Forecast for

2 Miles SW Princeton NJ

  • New Year's Day

    New Year's Day: A chance of snow showers before 8am. Mostly cloudy through mid morning, then becoming sunny, with a high near 31. Northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. Total daytime snow accumulation of less than a half inch possible.

    High: 31 °F

    Chance Snow
    Showers then
    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 18. West wind around 5 mph.

    Low: 18 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 33. West wind 5 to 10 mph.

    High: 33 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 17. Calm wind becoming west around 5 mph.

    Low: 17 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 34. Calm wind becoming west around 5 mph.

    High: 34 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of snow before 1am. Mostly cloudy, with a low around 20. Chance of precipitation is 20%.

    Low: 20 °F

    Slight Chance
    Snow

  • Sunday

    Sunday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

Detailed Forecast

New Year's Day
A chance of snow showers before 8am. Mostly cloudy through mid morning, then becoming sunny, with a high near 31. Northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Mostly cloudy, with a low around 18. West wind around 5 mph.
Friday
Partly sunny, with a high near 33. West wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 17. Calm wind becoming west around 5 mph.
Saturday
Partly sunny, with a high near 34. Calm wind becoming west around 5 mph.
Saturday Night
A slight chance of snow before 1am. Mostly cloudy, with a low around 20. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 36.
Sunday Night
Partly cloudy, with a low around 17.
Monday
Partly sunny, with a high near 33.
Monday Night
Mostly cloudy, with a low around 24.
Tuesday
Mostly cloudy, with a high near 41.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
A chance of rain. Mostly cloudy, with a high near 46. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Princeton NJ
 40.33°N 74.68°W (Elev. 98 ft)
Last Update:
5:58 am EST Jan 1, 2026
Forecast Valid:
7am EST Jan 1, 2026-6pm EST Jan 7, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation