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

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

25°F

-4°C

Humidity 53%
Wind Speed N 8 mph
Barometer 30.52 in (1033.2 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 2 Mar 1:53 am EST
Extended Forecast for

2 Miles SSE Princeton Junction NJ

  • Overnight

    Overnight: Clear, with a low around 16. North wind around 5 mph.

    Low: 16 °F

    Clear

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 34. North wind around 5 mph becoming calm.

    High: 34 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: A chance of snow after 1am. Increasing clouds, with a low around 20. Southeast wind around 5 mph becoming calm. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 20 °F

    Mostly Clear
    then Chance
    Snow

  • Tuesday

    Tuesday: Rain, possibly mixed with snow, becoming all rain after 1pm. High near 41. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain. Low around 36. Southwest wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 36 °F

    Rain

  • Wednesday

    Wednesday: A chance of rain, mainly before 1pm. Cloudy, with a high near 52. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain. Cloudy, with a low around 40. Chance of precipitation is 50%.

    Low: 40 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain. Cloudy, with a high near 64. Chance of precipitation is 30%.

    High: 64 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly after 1am. Cloudy, with a low around 44. Chance of precipitation is 60%.

    Low: 44 °F

    Rain Likely

Detailed Forecast

Overnight
Clear, with a low around 16. North wind around 5 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 34. North wind around 5 mph becoming calm.
Monday Night
A chance of snow after 1am. Increasing clouds, with a low around 20. Southeast wind around 5 mph becoming calm. Chance of precipitation is 30%. Little or no snow accumulation expected.
Tuesday
Rain, possibly mixed with snow, becoming all rain after 1pm. High near 41. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Tuesday Night
Rain. Low around 36. Southwest wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A chance of rain, mainly before 1pm. Cloudy, with a high near 52. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A chance of rain. Cloudy, with a low around 40. Chance of precipitation is 50%.
Thursday
A chance of rain. Cloudy, with a high near 64. Chance of precipitation is 30%.
Thursday Night
Rain likely, mainly after 1am. Cloudy, with a low around 44. Chance of precipitation is 60%.
Friday
A chance of rain before 1pm. Cloudy, with a high near 54. Chance of precipitation is 30%.
Friday Night
Mostly cloudy, with a low around 41.
Saturday
Cloudy, with a high near 66.
Saturday Night
A chance of rain. Cloudy, with a low around 49. Chance of precipitation is 40%.
Sunday
A chance of rain. Mostly cloudy, with a high near 63. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Princeton Junction NJ
 40.29°N 74.6°W (Elev. 98 ft)
Last Update:
4:10 pm EST Mar 1, 2026
Forecast Valid:
2am EST Mar 2, 2026-6pm EDT Mar 8, 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