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Municipality of Princeton, NJPrinceton, NJ 7-Day Night Weather Forecast
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Princeton, NJ Weather Forecast
Princeton, NJ Weather Forecast Date: 530 AM EDT Wed Sep 02 2026
The area/counties/county of: Mercer, including the city of Trenton.or toggle through each period.
Today... Mostly cloudy. Patchy fog this morning. A slight chance of showers this afternoon. Not as warm with highs in the upper 70s. East winds around 5 mph. Chance of rain 20%.
Tonight... Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers and thunderstorms likely after midnight. Humid with lows in the upper 60s. Southeast winds around 5 mph. Chance of rain 60%.
Thursday... Mostly cloudy in the morning, then becoming partly sunny. A chance of showers and thunderstorms. Warmer with highs in the upper 80s. Southwest winds 5 to 10 mph. Chance of rain 50%.
Thursday Night... Mostly cloudy with a chance of showers and thunderstorms. Humid with lows in the upper 60s. West winds around 5 mph. Chance of rain 50%.
Friday... Mostly sunny. Hot with highs in the mid 80s. Northwest winds around 5 mph.
Friday Night... Partly cloudy in the evening, then clearing. Lows in the lower 60s.
Saturday... Sunny. Highs in the lower 80s.
Saturday Night... Mostly clear. Lows in the upper 50s.
Sunday... Sunny. Highs in the upper 70s.
Sunday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 50s.
Labor Day... Sunny. Highs in the upper 70s.
Monday Night... Partly cloudy. Lows around 60.
POP = Probability of Precipitation
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