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

Areas of Showers and Thunderstorms to Start the Work Week

Areas of rain and thunderstorms are forecast Monday across the central and eastern states. Some mixed rain and snow is possible in the high Sierra Mountains. Heavy to excessive rain may bring flooding in the central Appalachians. Read More >

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Heavy Rain Fog/Mist

67°F

19°C

Humidity 97%
Wind Speed N 10 mph
Barometer 29.92 in (1012.6 mb)
Dewpoint 66°F (19°C)
Visibility 2.00 mi
Last update 20 Sep 11:53 pm EDT
Extended Forecast for

Princeton North NJ

  • Overnight

    Overnight: A chance of showers, mainly before 2am. Mostly cloudy, with a low around 58. North wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 58 °F

    Chance
    Showers

  • Monday

    Monday: Partly sunny, with a high near 70. Northeast wind 5 to 10 mph.

    High: 70 °F

    Partly Sunny

  • Monday Night

    Monday Night: Showers likely, mainly after 3am. Cloudy, with a low around 53. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 53 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely, mainly between 7am and 2pm. Cloudy, with a high near 64. Northeast wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 64 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers before 2am. Cloudy, with a low around 50. Northeast wind around 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers after 8am. Mostly cloudy, with a high near 64. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 64.

    High: 64 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A chance of showers after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 30%.

    Low: 49 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
A chance of showers, mainly before 2am. Mostly cloudy, with a low around 58. North wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Partly sunny, with a high near 70. Northeast wind 5 to 10 mph.
Monday Night
Showers likely, mainly after 3am. Cloudy, with a low around 53. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Showers likely, mainly between 7am and 2pm. Cloudy, with a high near 64. Northeast wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday Night
A chance of showers before 2am. Cloudy, with a low around 50. Northeast wind around 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A chance of showers after 8am. Mostly cloudy, with a high near 64. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly cloudy, with a low around 50.
Thursday
Mostly cloudy, with a high near 64.
Thursday Night
A chance of showers after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 65. Chance of precipitation is 30%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Saturday
A chance of showers. Partly sunny, with a high near 69. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 73. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Princeton North NJ
 40.34°N 74.64°W (Elev. 98 ft)
Last Update:
6:15 pm EDT Sep 20, 2026
Forecast Valid:
1am EDT Sep 21, 2026-6pm EDT Sep 27, 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