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

Trenton, Mercer County Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Mostly Cloudy

20°C

68°F

Humidity 73%
Wind Speed Calm
Barometer 1012.8 mb (29.93 in)
Dewpoint 15°C (59°F)
Visibility 16 km
Last update 3 Jun 5:53 am EDT
Extended Forecast for

Princeton NJ

  • Today

    Today: A chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 29. Calm wind. Chance of precipitation is 30%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.

    High: 29 °C

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 17. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than 1 mm, except higher amounts possible in thunderstorms.

    Low: 17 °C

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 27. Southeast wind 5 to 10 km/h.

    High: 27 °C

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 16. Southeast wind 5 to 10 km/h.

    Low: 16 °C

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 28. South wind 5 to 10 km/h. Chance of precipitation is 20%.

    High: 28 °C

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 19. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.

    Low: 19 °C

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 29. Chance of precipitation is 70%.

    High: 29 °C

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Partly cloudy, with a low around 17. Chance of precipitation is 40%.

    Low: 17 °C

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers after 2pm. Mostly sunny, with a high near 27. Chance of precipitation is 30%.

    High: 27 °C

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 29. Calm wind. Chance of precipitation is 30%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 17. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than 1 mm, except higher amounts possible in thunderstorms.
Tuesday
Mostly sunny, with a high near 27. Southeast wind 5 to 10 km/h.
Tuesday Night
Mostly cloudy, with a low around 16. Southeast wind 5 to 10 km/h.
Wednesday
A slight chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 28. South wind 5 to 10 km/h. Chance of precipitation is 20%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 19. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.
Thursday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 29. Chance of precipitation is 70%.
Thursday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Partly cloudy, with a low around 17. Chance of precipitation is 40%.
Friday
A chance of showers after 2pm. Mostly sunny, with a high near 27. Chance of precipitation is 30%.
Friday Night
A chance of showers before 8pm. Partly cloudy, with a low around 15. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly sunny, with a high near 26. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Partly cloudy, with a low around 15. Chance of precipitation is 30%.
Sunday
A chance of showers. Mostly sunny, with a high near 26. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Princeton NJ
 40.34°N 74.64°W (Elev. 98 m)
Last Update:
5:50 am EDT Jun 3, 2024
Forecast Valid:
6am EDT Jun 3, 2024-6pm EDT Jun 9, 2024
 
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