National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Light Wintry Mix through Friday Morning, then Potential for a Winter Storm Sunday through Monday

Briefing on Friday morning icing in the southern Poconos and NW NJ, as well as key points for the potential Sunday-Monday winter storm. Read More >

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Unknown Precip

36°F

2°C

Humidity 86%
Wind Speed E 9 mph
Barometer 29.90 in (1012.1 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 20 Feb 3:53 am EST
Extended Forecast for

Princeton Junction NJ

  • Overnight

    Overnight: A chance of rain after 5am. Patchy fog. Otherwise, cloudy, with a low around 35. East wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Chance Rain
    and Patchy
    Fog

  • Friday

    Friday: Rain, mainly before 2pm. High near 44. East wind 5 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 44 °F

    Rain then
    Rain Likely

  • Friday Night

    Friday Night: Cloudy, then gradually becoming partly cloudy, with a low around 34. Calm wind becoming west around 5 mph after midnight.

    Low: 34 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 49. West wind 5 to 10 mph.

    High: 49 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of rain and snow after 1am. Mostly cloudy, with a low around 32. Calm wind. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Sunday

    Sunday: Snow likely, possibly mixed with rain before 1pm, then snow. High near 38. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 38 °F

    Rain/Snow

  • Sunday Night

    Sunday Night: Snow likely. Cloudy, with a low around 29. Chance of precipitation is 70%.

    Low: 29 °F

    Snow Likely

  • Monday

    Monday: A chance of snow before 1pm. Cloudy, with a high near 39. Chance of precipitation is 30%.

    High: 39 °F

    Chance Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of rain after 5am. Patchy fog. Otherwise, cloudy, with a low around 35. East wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain, mainly before 2pm. High near 44. East wind 5 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Cloudy, then gradually becoming partly cloudy, with a low around 34. Calm wind becoming west around 5 mph after midnight.
Saturday
Partly sunny, with a high near 49. West wind 5 to 10 mph.
Saturday Night
A chance of rain and snow after 1am. Mostly cloudy, with a low around 32. Calm wind. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday
Snow likely, possibly mixed with rain before 1pm, then snow. High near 38. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Snow likely. Cloudy, with a low around 29. Chance of precipitation is 70%.
Monday
A chance of snow before 1pm. Cloudy, with a high near 39. Chance of precipitation is 30%.
Monday Night
Mostly cloudy, with a low around 24.
Tuesday
Mostly sunny, with a high near 37.
Tuesday Night
Partly cloudy, with a low around 19.
Wednesday
Mostly cloudy, with a high near 43.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 50%.
Thursday
A chance of rain. Mostly cloudy, with a high near 48. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Princeton Junction NJ
 40.32°N 74.62°W (Elev. 85 ft)
Last Update:
12:19 am EST Feb 20, 2026
Forecast Valid:
4am EST Feb 20, 2026-6pm EST Feb 26, 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