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.

Light Rain

51°F

11°C

Humidity 92%
Wind Speed N 12 G 21 mph
Barometer 29.39 in (994.8 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 12 Nov 5:53 pm EST
Extended Forecast for

Pennington NJ

  • Tonight

    Tonight: Showers likely before 1am, then rain after 1am. Low around 36. Northeast wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 36 °F

    Rain

  • Friday

    Friday: Rain. High near 45. North wind 5 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 45 °F

    Rain then
    Rain Likely

  • Friday Night

    Friday Night: A chance of rain, mainly before 11pm. Mostly cloudy, with a low around 31. Northwest wind around 5 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 31 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 47. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 47 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31. West wind around 5 mph.

    Low: 31 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers likely before 1am, then rain after 1am. Low around 36. Northeast wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 45. North wind 5 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A chance of rain, mainly before 11pm. Mostly cloudy, with a low around 31. Northwest wind around 5 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Partly sunny, with a high near 47. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 31. West wind around 5 mph.
Sunday
Mostly sunny, with a high near 50.
Sunday Night
Partly cloudy, with a low around 32.
Monday
Sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 29.
Tuesday
Sunny, with a high near 54.
Tuesday Night
Clear, with a low around 29.
Wednesday
Sunny, with a high near 60.
Wednesday Night
Clear, with a low around 31.
Thursday
Sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Pennington NJ
 40.34°N 74.79°W (Elev. 171 ft)
Last Update:
5:05 pm EST Nov 12, 2026
Forecast Valid:
6pm EST Nov 12, 2026-6pm EST Nov 19, 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