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Princetown weather in September 2025
Expect 25°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Princetown in September. Check more long-term weather averages for Princetown in September before you book your next holiday to New Jersey in 2025/2026.
- 2525°C max day temperature
- 7 hours of sunshine per day
- 88 days with some rainfall
- 1212°C min night temperature
- 1212 hours of daylight per day
- 0No heat & humidity
- 104104 mm of monthly rainfall
- 66 (High) UV index
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Recommended for New Jersey
The September weather guide for New Jersey (Princetown) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Princetown in September?
Daytime temperatures usually reach 25°C in Princetown in September with no heat and humidity, falling to 12°C at night.
How sunny is it in Princetown in September?
There are normally 7 hours of bright sunshine each day in Princetown in September - that's 58% of daylight hours.
Does it rain in Princetown in September?
There are usually 8 days with some rain in Princetown in September and the average monthly rainfall is 104mm.
What is the chance of a hurricane in Princetown in September?
On average less than 1 day in September in Princetown is likely to be affected by the passage of one or more tropical storms.
Princetown September sunrise & sunset times
Browse the sunrise and sunset times for Princetown in September 2025. Select a month to view Princetown sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 05:26 | 18:30 |
Monday, 15th September 2025 | 05:40 | 18:07 |
Tuesday, 30th September 2025 | 05:54 | 17:42 |
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