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

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

71°F

22°C

Humidity 44%
Wind Speed E 12 G 17 mph
Barometer 30.22 in (1022.6 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 3 Oct 3:53 pm EDT
Extended Forecast for

Pennington NJ

  • Tonight

    Tonight: Partly cloudy, with a low around 55. Northeast wind around 5 mph.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers after noon. Cloudy, with a high near 65. East wind around 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 65 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of showers between 8pm and 2am. Patchy fog before 2am, then patchy fog after 3am. Otherwise, mostly cloudy, with a low around 57. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 57 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 70. Northwest wind 5 to 15 mph.

    High: 70 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Clear, with a low around 44. Northwest wind around 5 mph.

    Low: 44 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Tuesday Night

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

    Low: 43 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 55. Northeast wind around 5 mph.
Sunday
A chance of showers after noon. Cloudy, with a high near 65. East wind around 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
A slight chance of showers between 8pm and 2am. Patchy fog before 2am, then patchy fog after 3am. Otherwise, mostly cloudy, with a low around 57. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 70. Northwest wind 5 to 15 mph.
Monday Night
Clear, with a low around 44. Northwest wind around 5 mph.
Tuesday
Sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Sunny, with a high near 68.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Sunny, with a high near 73.
Thursday Night
Mostly clear, with a low around 50.
Friday
Sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Mostly sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Pennington NJ
 40.32°N 74.79°W (Elev. 203 ft)
Last Update:
4:10 pm EDT Oct 3, 2026
Forecast Valid:
4pm EDT Oct 3, 2026-6pm EDT Oct 10, 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