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.

Overcast

30°F

-1°C

Humidity 92%
Wind Speed NE 10 mph
Barometer 30.02 in (1016.3 mb)
Dewpoint 28°F (-2°C)
Visibility 8.00 mi
Wind Chill21°F (-6°C)
Last update 16 Feb 4:53 am EST
Extended Forecast for

2 Miles SSE Princeton Junction NJ

  • Overnight

    Overnight: A slight chance of snow. Patchy fog. Otherwise, cloudy, with a low around 30. Northeast wind around 10 mph. Chance of precipitation is 20%.

    Low: 30 °F

    Slight Chance
    Snow and
    Patchy Fog

  • Washington's Birthday

    Washington's Birthday: Cloudy, then gradually becoming mostly sunny, with a high near 40. Northeast wind 5 to 10 mph.

    High: 40 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Increasing clouds, with a low around 25. Calm wind becoming southwest around 5 mph after midnight.

    Low: 25 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 46. Calm wind becoming southwest around 5 mph.

    High: 46 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain likely, mainly after 1pm. Cloudy, with a high near 47. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 47 °F

    Rain Likely

  • Wednesday Night

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

    Low: 37 °F

    Chance Rain

  • Thursday

    Thursday: Mostly cloudy, with a high near 46.

    High: 46 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A chance of rain after 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 40%.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Overnight
A slight chance of snow. Patchy fog. Otherwise, cloudy, with a low around 30. Northeast wind around 10 mph. Chance of precipitation is 20%.
Washington's Birthday
Cloudy, then gradually becoming mostly sunny, with a high near 40. Northeast wind 5 to 10 mph.
Monday Night
Increasing clouds, with a low around 25. Calm wind becoming southwest around 5 mph after midnight.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 46. Calm wind becoming southwest around 5 mph.
Tuesday Night
Mostly cloudy, with a low around 33. Calm wind.
Wednesday
Rain likely, mainly after 1pm. Cloudy, with a high near 47. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A chance of rain before 1am. Mostly cloudy, with a low around 37. Chance of precipitation is 30%.
Thursday
Mostly cloudy, with a high near 46.
Thursday Night
A chance of rain after 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 40%.
Friday
Rain likely. Cloudy, with a high near 44. Chance of precipitation is 70%.
Friday Night
A chance of rain. Cloudy, with a low around 33. Chance of precipitation is 40%.
Saturday
A chance of rain. Mostly cloudy, with a high near 44. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 27.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 42. Chance of precipitation is 40%.
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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:
4:14 am EST Feb 16, 2026
Forecast Valid:
5am EST Feb 16, 2026-6pm EST Feb 22, 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