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Trenton weather in September 2025
Expect 79°F daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Trenton in September. Check more long-term weather averages for Trenton in September before you book your next holiday to New Jersey in 2025/2026.
- 7979°F max day temperature
- 7 hours of sunshine per day
- 88 days with some rainfall
- 5555°F min night temperature
- 1212 hours of daylight per day
- 0No heat & humidity
- 4.04.0 inches of monthly rainfall
- 66 (High) UV index
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Recommended for New Jersey
The September weather guide for New Jersey (Trenton) 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) | Imperial (°F)
More about the USA
How hot is it in Trenton in September?
Daytime temperatures usually reach 79°F in Trenton in September with no heat and humidity, falling to 55°F at night.
How sunny is it in Trenton in September?
There are normally 7 hours of bright sunshine each day in Trenton in September - that's 58% of daylight hours.
Does it rain in Trenton in September?
There are usually 8 days with some rain in Trenton in September and the average monthly rainfall is 4.0 inches.
What is the chance of a hurricane in Trenton in September?
On average less than 1 day in September in Trenton is likely to be affected by the passage of one or more tropical storms.
Trenton September sunrise & sunset times
Browse the sunrise and sunset times for Trenton in September 2025. Select a month to view Trenton sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 05:27 | 18:30 |
Monday, 15th September 2025 | 05:40 | 18:07 |
Tuesday, 30th September 2025 | 05:55 | 17:42 |
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