Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Overcast

42°F

6°C

Humidity 76%
Wind Speed SW 7 mph
Barometer 29.37 in (994.1 mb)
Dewpoint 35°F (2°C)
Visibility NA
Wind Chill38°F (3°C)
Last update 15 Jan 2:53 am EST
Extended Forecast for

Princeton Junction NJ

  • Overnight

    Overnight: A chance of rain.  Cloudy, with a low around 37. Southwest wind around 5 mph.  Chance of precipitation is 50%.

    Low: 37 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain, mainly before 7am.  Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 31 by 5pm. Breezy, with a west wind 15 to 20 mph.  Chance of precipitation is 30%.

    High: 39 °F

    Breezy.
    Chance Rain
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 21. Breezy, with a west wind 15 to 20 mph.

    Low: 21 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Friday

    Friday: Sunny, with a high near 35. West wind 10 to 15 mph.

    High: 35 °F

    Sunny

  • Friday Night

    Friday Night: A slight chance of snow after 1am.  Mostly cloudy, with a low around 26. South wind around 5 mph.  Chance of precipitation is 20%.

    Low: 26 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: A chance of snow before 1pm, then a chance of rain and snow between 1pm and 4pm, then a chance of rain after 4pm.  Mostly cloudy, with a high near 42. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 42 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of snow.  Mostly cloudy, with a high near 34. Chance of precipitation is 30%.

    High: 34 °F

    Chance Snow

  • Sunday Night

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

    Low: 17 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of rain. Cloudy, with a low around 37. Southwest wind around 5 mph. Chance of precipitation is 50%.
Thursday
A chance of rain, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 31 by 5pm. Breezy, with a west wind 15 to 20 mph. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 21. Breezy, with a west wind 15 to 20 mph.
Friday
Sunny, with a high near 35. West wind 10 to 15 mph.
Friday Night
A slight chance of snow after 1am. Mostly cloudy, with a low around 26. South wind around 5 mph. Chance of precipitation is 20%.
Saturday
A chance of snow before 1pm, then a chance of rain and snow between 1pm and 4pm, then a chance of rain after 4pm. Mostly cloudy, with a high near 42. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Mostly cloudy, with a low around 27.
Sunday
A chance of snow. Mostly cloudy, with a high near 34. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 17.
M.L.King Day
Sunny, with a high near 30.
Monday Night
Partly cloudy, with a low around 13.
Tuesday
Sunny, with a high near 23.
Tuesday Night
Mostly clear, with a low around 9.
Wednesday
Mostly sunny, with a high near 28.
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ABOUT THIS FORECAST

 
Point Forecast:
Princeton Junction NJ
 40.32°N 74.62°W (Elev. 85 ft)
2:35 am EST Jan 15, 2026
3am EST Jan 15, 2026-6pm EST Jan 21, 2026
 
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Additional Resources

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