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.

Mostly Cloudy

64°F

18°C

Humidity 58%
Wind Speed NW 12 mph
Barometer 30.07 in (1017.7 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 3 Oct 1:53 am EDT
Extended Forecast for

2 Miles SSE Princeton Junction NJ

  • Overnight

    Overnight: Mostly cloudy, with a low around 57. North wind around 5 mph.

    Low: 57 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 72. Northeast wind 5 to 10 mph.

    High: 72 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54. Northeast wind around 5 mph.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers. Increasing clouds, with a high near 66. East wind around 5 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 66 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 2am. Cloudy, with a low around 56. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 41.

    Low: 41 °F

    Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 57. North wind around 5 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 72. Northeast wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 54. Northeast wind around 5 mph.
Sunday
A chance of showers. Increasing clouds, with a high near 66. East wind around 5 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A chance of showers before 2am. Cloudy, with a low around 56. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 70.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Sunny, with a high near 62.
Tuesday Night
Clear, with a low around 41.
Wednesday
Sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Sunny, with a high near 69.
Thursday Night
Mostly clear, with a low around 50.
Friday
Sunny, with a high near 70.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Princeton Junction NJ
 40.3°N 74.62°W (Elev. 98 ft)
Last Update:
4:10 pm EDT Oct 2, 2026
Forecast Valid:
2am EDT Oct 3, 2026-6pm EDT Oct 9, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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