
Wintry precipitation expected Friday afternoon into Saturday morning
A storm system will bring accumulating snow, sleet, and freezing rain that can lead to holiday travel disruptions. View this briefing for details. Read More >
Hazardous Weather Conditions
Current conditions at
Trenton-Mercer Airport (KTTN)
Lat: 40.28°NLon: 74.82°WElev: 210ft.
Fair
46°F
8°C
| Humidity | 46% |
| Wind Speed | W 9 mph |
| Barometer | 29.86 in (1010.5 mb) |
| Dewpoint | 26°F (-3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 41°F (5°C) |
| Last update | 25 Dec 12:53 pm EST |
Extended Forecast for
Princeton Junction NJ
Winter Weather Advisory December 26, 03:00pm until December 27, 10:00am
Christmas Day

High: 47 °F
Mostly Sunny
Tonight

Low: 19 °F
Partly Cloudy
Friday
High: 31 °F
Partly Sunny
then Snow
LikelyFriday Night

Low: 26 °F
Snow/Sleet
Saturday

High: 35 °F
Chance Snow
Saturday Night

Low: 20 °F
Mostly Cloudy
Sunday
High: 38 °F
Mostly Cloudy
then Chance
RainSunday Night

Low: 31 °F
Rain
Monday

High: 50 °F
Rain
Detailed Forecast
Christmas Day
Mostly sunny, with a high near 47. Northwest wind around 10 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around 19. North wind around 10 mph.
Friday
Snow likely after 1pm. Increasing clouds, with a high near 31. North wind around 5 mph becoming east in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday Night
Snow before 10pm, then snow, possibly mixed with sleet between 10pm and 4am, then snow after 4am. The snow could be heavy at times. Low around 26. East wind 5 to 10 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 3 to 5 inches possible.
Saturday
A chance of snow. Cloudy, with a high near 35. Northeast wind 5 to 10 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Saturday Night
Mostly cloudy, with a low around 20.
Sunday
A chance of rain after 1pm. Mostly cloudy, with a high near 38. Chance of precipitation is 40%.
Sunday Night
Rain. Low around 31. Chance of precipitation is 80%.
Monday
Rain, mainly before 1pm. High near 50. Chance of precipitation is 80%.
Monday Night
Partly cloudy, with a low around 22.
Tuesday
Partly sunny, with a high near 33.
Tuesday Night
Mostly cloudy, with a low around 21.
Wednesday
Mostly sunny, with a high near 35.
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 74.62°W (Elev. 85 ft)
40.32°N 74.62°W (Elev. 85 ft)
4:11 am EST Dec 25, 2025
1pm EST Dec 25, 2025-6pm EST Dec 31, 2025



