Current conditions at
Trenton-Mercer Airport (KTTN)
Lat: 40.28°NLon: 74.82°WElev: 210ft.
Overcast
41°F
5°C
| Humidity | 73% |
| Wind Speed | W 13 G 22 mph |
| Barometer | 29.41 in (995.2 mb) |
| Dewpoint | 33°F (1°C) |
| Visibility | 7.00 mi |
| Wind Chill | 34°F (1°C) |
| Last update | 15 Jan 6:53 am EST |
Extended Forecast for
Princeton Junction NJ
Today
High: 39 °F⇓
Breezy.
Slight Chance
Rain then
Partly SunnyTonight
Low: 21 °F
Mostly Cloudy
and Breezy
then Partly
CloudyFriday
High: 35 °F
Sunny
Friday Night
Low: 26 °F
Partly Cloudy
then Slight
Chance SnowSaturday
High: 42 °F
Chance Snow
then Chance
Rain/SnowSaturday Night
Low: 27 °F
Slight Chance
Rain then
Slight Chance
Rain/SnowSunday
High: 34 °F
Chance Snow
Sunday Night
Low: 17 °F
Partly Cloudy
M.L.King Day
High: 30 °F
Sunny
Detailed Forecast
Today
A slight chance of rain before 8am. Cloudy through mid morning, then 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 20%.
Tonight
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. Calm wind becoming southwest around 5 mph in the morning. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Saturday Night
A slight chance of rain before 1am, then a slight chance of rain and snow between 1am and 4am, then a slight chance of snow after 4am. Mostly cloudy, with a low around 27. Chance of precipitation is 20%.
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.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Princeton Junction NJ
40.32°N 74.62°W (Elev. 85 ft)
40.32°N 74.62°W (Elev. 85 ft)
4:14 am EST Jan 15, 2026
7am EST Jan 15, 2026-6pm EST Jan 21, 2026
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