Current conditions at
Trenton-Mercer Airport (KTTN)
Lat: 40.28°NLon: 74.82°WElev: 210ft.
A Few Clouds
56°F
13°C
| Humidity | 46% |
| Wind Speed | N 10 mph |
| Barometer | 29.88 in (1011.4 mb) |
| Dewpoint | 35°F (2°C) |
| Visibility | 10.00 mi |
| Last update | 2 May 12:53 pm EDT |
Extended Forecast for
Princeton Junction NJ
This Afternoon

High: 62 °F
Mostly Cloudy
Tonight

Low: 38 °F
Decreasing
CloudsSunday

High: 61 °F
Sunny
Sunday Night

Low: 43 °F
Mostly Clear
Monday

High: 73 °F
Sunny
Monday Night

Low: 53 °F
Partly Cloudy
Tuesday

High: 82 °F
Mostly Sunny
Tuesday Night

Low: 61 °F
Mostly Cloudy
Wednesday

High: 75 °F
Chance
Showers
Detailed Forecast
This Afternoon
Mostly cloudy, with a high near 62. Northwest wind around 10 mph.
Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 38. North wind 5 to 10 mph.
Sunday
Sunny, with a high near 61. Northwest wind 10 to 15 mph.
Sunday Night
Mostly clear, with a low around 43. Southwest wind around 5 mph.
Monday
Sunny, with a high near 73. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
Mostly cloudy, with a low around 61.
Wednesday
A chance of showers after 8am. Mostly cloudy, with a high near 75. Chance of precipitation is 50%.
Wednesday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Thursday
Showers. High near 69. Chance of precipitation is 80%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 45. Chance of precipitation is 50%.
Friday
Mostly sunny, with a high near 63.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Princeton Junction NJ
40.32°N 74.59°W (Elev. 85 ft)
40.32°N 74.59°W (Elev. 85 ft)
12:51 pm EDT May 2, 2026
1pm EDT May 2, 2026-6pm EDT May 8, 2026


