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.

Partly Cloudy

27°F

-3°C

Humidity 66%
Wind Speed W 6 mph
Barometer 30.19 in (1021.9 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 4 Jan 9:53 pm EST
Extended Forecast for

2 Miles SSE Princeton Junction NJ

  • Tonight

    Tonight: Partly cloudy, with a low around 19. West wind around 5 mph becoming calm.

    Low: 19 °F

    Partly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 36. Calm wind becoming south around 5 mph in the afternoon.

    High: 36 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 44. Calm wind.

    High: 44 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of rain, mainly before 1am. Mostly cloudy, with a low around 33. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 40%.

    Low: 33 °F

    Chance Rain

  • Wednesday

    Wednesday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of rain after 1am. Mostly cloudy, with a low around 37. Chance of precipitation is 30%.

    Low: 37 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Tonight
Partly cloudy, with a low around 19. West wind around 5 mph becoming calm.
Monday
Mostly cloudy, with a high near 36. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 26. Calm wind.
Tuesday
Mostly cloudy, with a high near 44. Calm wind.
Tuesday Night
A chance of rain, mainly before 1am. Mostly cloudy, with a low around 33. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 40%.
Wednesday
Mostly sunny, with a high near 52.
Wednesday Night
Partly cloudy, with a low around 30.
Thursday
Mostly sunny, with a high near 50.
Thursday Night
A chance of rain after 1am. Mostly cloudy, with a low around 37. Chance of precipitation is 30%.
Friday
Rain likely, mainly after 1pm. Mostly cloudy, with a high near 56. Chance of precipitation is 60%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 44. Chance of precipitation is 50%.
Saturday
A chance of rain. Mostly cloudy, with a high near 56. Chance of precipitation is 50%.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Princeton Junction NJ
 40.29°N 74.6°W (Elev. 98 ft)
Last Update:
4:11 pm EST Jan 4, 2026
Forecast Valid:
10pm EST Jan 4, 2026-6pm EST Jan 11, 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