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

Areas of Severe Thunderstorms and Heavy Rain Possible through the Weekend

There will be daily chances for scattered thunderstorms across portions of the Central and Eastern U.S. through the weekend, with severe thunderstorms possible in the northern Plains and Upper Midwest. Potential severe storm hazards may include large hail, damaging winds, and a few tornadoes. Storms could also produce heavy rain that may lead to isolated instances of flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Trenton, Mercer County Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Overcast

63°F

17°C

Humidity 81%
Wind Speed E 8 mph
Barometer 30.19 in (1021.6 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 27 Jun 10:53 pm EDT
Extended Forecast for

Princeton North NJ

Heat Advisory June 28, 12:00pm until June 28, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: A chance of showers and thunderstorms, mainly before 5am. Patchy fog. Otherwise, cloudy, with a low around 64. East wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: A chance of showers and thunderstorms, mainly after 4pm. Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 89. South wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Chance
    Showers and
    Patchy Fog
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 70. Southwest wind around 5 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    T-storms
    Likely then
    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 87. West wind around 5 mph.

    High: 87 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 20%.

    High: 91 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.

    Low: 72 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 87. Chance of precipitation is 80%.

    High: 87 °F

    Chance
    Showers then
    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 8pm. Low around 68. Chance of precipitation is 80%.

    Low: 68 °F

    Showers then
    Partly Cloudy

Detailed Forecast

Overnight
A chance of showers and thunderstorms, mainly before 5am. Patchy fog. Otherwise, cloudy, with a low around 64. East wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers and thunderstorms, mainly after 4pm. Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 89. South wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 70. Southwest wind around 5 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Mostly sunny, with a high near 87. West wind around 5 mph.
Sunday Night
Mostly clear, with a low around 66. Calm wind.
Monday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 20%.
Monday Night
A chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.
Tuesday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 87. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm before 8pm. Low around 68. Chance of precipitation is 80%.
Wednesday
Sunny, with a high near 87.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
Mostly sunny, with a high near 88.
Thursday Night
Partly cloudy, with a low around 66.
Independence Day
Sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Princeton North NJ
 40.37°N 74.64°W (Elev. 98 ft)
Last Update:
6:58 pm EDT Jun 27, 2025
Forecast Valid:
12am EDT Jun 28, 2025-6pm EDT Jul 4, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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