Trenton weather in September 2026

Expect daytime maximum temperatures of 79°F in Trenton, New Jersey in September based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 4.0 inches of rainfall in the month.

• 79
  79°F max day temperature
• 7
  7 hours of sunshine per day
• 8
  8 days with some rainfall
• 55
  55°F min night temperature
• 12
  12 hours of daylight per day
• 0
  No heat & humidity
• 4.0
  4.0 inches of monthly rainfall
• 6
  6 (High) UV index

More about Trenton

• 
  Best time to visit
• 
  Weather by month
• 
  5-day weather forecast
• 
  Destinations
• 
  Travel guide
• 
  Deals & discounts

Trenton by month

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

Recommended for New Jersey

• Travelsphere^*
• Cosmos^*
• Love Holidays^*
• Saga Holidays^*

Marriott discount code: Kids stay & eat for free

Discount Code

• Kids stay & eat for free at Marriot Bonvoy
• Destinations include Europe, Middle East & Africa
• Valid for up to 2 adults & 2 kids aged up to 12

Show discount code ******ZJ6

Redeem Marriott discount code >>

View all Marriott 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

Trenton September sunrise & sunset times

Browse the sunrise and sunset times for Trenton in September 2026. Select a month to view Trenton sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Related posts

Popular travel offers

Explore holiday destinations

• Beach holidays
• City breaks
• Family holidays
• Half term holidays
• Spring holidays
• Summer holidays
• Autumn holidays
• Winter sun holidays
• Honeymoons
• Coolcations
• Compare places
• Ski resorts

More holidays

Save with latest deals & discounts

• Holiday offers
• Top travel brands
• Airlines & flights
• Discount hotels
• TUI
• Jet2holidays
• Neilson
• Marella Cruises
• Roamless eSIMs
• Confused.com
• Pierre & Vacances
• Caledonian Travel

More deals

Airport parking

• Manchester Airport
• Stansted Airport
• Bristol Airport
• Luton Airport
• Birmingham Airport
• Edinburgh Airport
• Gatwick Airport
• Glasgow Airport
• Newcastle Airport

More parking

Airport lounges

• Manchester Airport
• Birmingham Airport
• Bristol Airport
• Edinburgh Airport
• Glasgow Airport
• Heathrow Airport
• Newcastle Airport
• Stansted Airport
• Gatwick Airport

More lounges

Top ^