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Current conditions at
Trenton-Mercer Airport (KTTN)
Lat: 40.28°NLon: 74.82°WElev: 210ft.
Fog/Mist
40°F
4°C
| Humidity | 100% |
| Wind Speed | E 5 mph |
| Barometer | 30.34 in (1026.9 mb) |
| Dewpoint | 40°F (4°C) |
| Visibility | 2.00 mi |
| Wind Chill | 36°F (2°C) |
| Last update | 3 Apr 4:53 am EDT |
Extended Forecast for
Princeton Junction NJ
Today
High: 73 °F
Areas Dense
Fog then
Partly SunnyTonight
Low: 59 °F
Slight Chance
Showers and
Patchy FogSaturday
High: 78 °F
Patchy Fog
then Chance
ShowersSaturday Night
Low: 52 °F
Chance
ShowersSunday
High: 73 °F
Showers
Sunday Night
Low: 40 °F
Mostly Cloudy
Monday
High: 57 °F
Mostly Sunny
Monday Night
Low: 37 °F
Partly Cloudy
Tuesday
High: 53 °F
Mostly Sunny
Detailed Forecast
Today
Areas of dense fog before noon. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 73. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
A slight chance of showers before 2am. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 59. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Saturday
A chance of showers and thunderstorms between 2pm and 5pm, then a chance of showers after 5pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 52. East wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers. High near 73. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Mostly cloudy, with a low around 40.
Monday
Mostly sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 53.
Tuesday Night
Mostly clear, with a low around 29.
Wednesday
Sunny, with a high near 55.
Wednesday Night
Mostly clear, with a low around 34.
Thursday
Sunny, with a high near 66.
Additional Forecasts and Information
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Point Forecast:
Princeton Junction NJ
40.32°N 74.62°W (Elev. 85 ft)
40.32°N 74.62°W (Elev. 85 ft)
4:10 am EDT Apr 3, 2026
6am EDT Apr 3, 2026-6pm EDT Apr 9, 2026
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