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.

Fair

45°F

7°C

Humidity 37%
Wind Speed SW 7 mph
Barometer 30.35 in (1027.3 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 24 Mar 2:53 pm EDT
Extended Forecast for

2 Miles SSE Princeton Junction NJ

  • Tonight

    Tonight: Increasing clouds, with a low around 33. Calm wind.

    Low: 33 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 55. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 55 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 42. South wind around 5 mph.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 70. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 70 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Rain, mainly after 2am. Low around 50. South wind around 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Chance Rain
    then Rain

  • Friday

    Friday: Rain, mainly before 8am. High near 60. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 60 °F

    Rain then
    Chance Rain

  • Friday Night

    Friday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Saturday Night

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

    Low: 27 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 33. Calm wind.
Wednesday
Mostly cloudy, with a high near 55. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 42. South wind around 5 mph.
Thursday
Partly sunny, with a high near 70. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Rain, mainly after 2am. Low around 50. South wind around 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain, mainly before 8am. High near 60. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Sunny, with a high near 46.
Saturday Night
Mostly clear, with a low around 27.
Sunday
Sunny, with a high near 53.
Sunday Night
Mostly cloudy, with a low around 36.
Monday
Partly sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Partly sunny, with a high near 59.
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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:
4:08 am EDT Mar 24, 2026
Forecast Valid:
3pm EDT Mar 24, 2026-6pm EDT Mar 31, 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