Heavy Rain in the Southeast and Portions of the Central Plains; Mountain Snow in the West

Scattered areas of heavy rain continue to produce isolated flash flooding across the coastlines of the central Gulf and Southeast. A storm system will bring mountain snow, locally heavy rain, gusty winds and much cooler temperatures to portions of the western and central U.S. Above average temperatures will advance eastward into the Great Lakes and Northeast today and Monday. Read More >

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

82°F

28°C

Humidity 33%
Wind Speed S 5 mph
Barometer 30.25 in (1023.6 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 5 Oct 4:53 pm EDT
Extended Forecast for

Princeton NJ

  • Tonight

    Tonight: Clear, with a low around 53. Calm wind.

    Low: 53 °F

    Clear

  • Monday

    Monday: Patchy fog before 9am.  Otherwise, sunny, with a high near 81. Calm wind becoming southwest around 5 mph.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 56. South wind around 5 mph becoming calm.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81. Calm wind becoming southwest around 5 mph in the morning.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Showers, with thunderstorms also possible after 5am.  Low around 59. South wind around 5 mph.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 59 °F

    Showers
    Likely then
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 8am, then showers likely.  High near 70. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 70 °F

    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 53. Calm wind.
Monday
Patchy fog before 9am. Otherwise, sunny, with a high near 81. Calm wind becoming southwest around 5 mph.
Monday Night
Mostly clear, with a low around 56. South wind around 5 mph becoming calm.
Tuesday
Mostly sunny, with a high near 81. Calm wind becoming southwest around 5 mph in the morning.
Tuesday Night
Showers, with thunderstorms also possible after 5am. Low around 59. South wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers and possibly a thunderstorm before 8am, then showers likely. High near 70. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Sunny, with a high near 63.
Thursday Night
Mostly clear, with a low around 40.
Friday
Mostly sunny, with a high near 66.
Friday Night
Partly cloudy, with a low around 45.
Saturday
Mostly sunny, with a high near 69.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Mostly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
Princeton NJ
 40.37°N 74.67°W (Elev. 256 ft)
4:09 pm EDT Oct 5, 2025
5pm EDT Oct 5, 2025-6pm EDT Oct 12, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database