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.

  • 79°F maximum daytime temperature in September in Trenton79
    79°F max day temperature
  • 7 hours of sunshine per day
  • 8 days with some rainfall in September in Trenton8
    8 days with some rainfall
  • 55°F minimum night-time temperature in September in Trenton55
    55°F min night temperature
  • 12 hours of daylight per day in September in Trenton12
    12 hours of daylight per day
  • No heat & humidity in September in Trenton0
    No heat & humidity
  • 4.0 inches monthly rainfall in September in Trenton4.0
    4.0 inches of monthly rainfall
  • UV (maximum) index 6 (High) in September in Trenton6
    6 (High) UV index

More about Trenton

Trenton by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for New Jersey

Avalon Waterways: Top deals on 2025 river cruises

  • Book early & save on 2025 river cruises with Avalon Waterways
  • Filter deals by promotion, month, destination & more
  • Travel between 1st Jan & 31st Dec 2025 (inclusive)
Go to Avalon Waterways deal >>

Expires at 23:59 on Wednesday 31st Dec 2025 · View all Avalon Waterways offers

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)

Back to top

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

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^