ClimateForecastNovemberDecember >>

Trenton (NJ) Climate by Month

Trenton in New Jersey lies in the transition from a humid subtropical to a warmer humid continental climate The four seasons are about the same length, with precipitation evenly distributed throughout the year. Real extremes in temperature are very rare. On average, around 1200 mm of precipitation falls each year.

Average day and night temperature

Depending on the time of the year, temperatures range from very warm to chilly in Trenton. On average, daytime temperatures range from a very warm 31°C in July to a chilly 5°C in January. Nighttime temperatures can drop, with averages reaching -5°C in January.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Trenton has a relatively rain/snowy climate with high precipitation levels, averaging 1217 mm of rain/snowfall annually. The amount of precipitation varies moderately throughout the year. The wettest month, December, sees around 125 mm of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, February, still receives a respectable 73 mm of snow/rainfall.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

In Trenton, summer days are longer and more sunny, with daily sunshine hours peaking at 9.0 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 4.7 hours.

Monthly hours of sunshine

Daily hours of sunshine

The best time of year to visit Trenton in the United States of America

During the months of May and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is summer in Trenton?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in Trenton?
    July has an average maximum temperature of 31°C and is the warmest month of the year.
  • Which is the coldest month in Trenton?
    The coldest month is January with an average maximum temperature of 5°C.
  • Which is the wettest month in Trenton?
    December tops the wettest month list with 125 mm of rainfall.
  • Which is the driest month in Trenton?
    February is the driest month with 73 mm of precipitation.
  • Which is the sunniest month in Trenton?
    July is the sunniest month with an average of 269 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Trenton (NJ)

    Thu   Nov 21
    12°C | 2°C
    NW 22 km/h
    22 mm
    overcast and heavy rain

    overcast and heavy rain

    Fri   Nov 22
    5°C | 1°C
    SW 22 km/h
    10 mm
    overcast and heavy rain

    overcast and heavy rain

    Sat   Nov 23
    10°C | 1°C
    NW 25 km/h
    partly cloudy and no rain

    partly cloudy and no rain