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Harrison (NJ) Weather and Climate: A Comprehensive Guide

The temperature in Harrison can vary greatly throughout the year. The temperatures shift from very warm to cold. It also has a notably wet climate with much precipitation. Now, let’s break down all the climate details for a clearer picture.

Average maximum day and minimum night temperature

Depending on the time of the year, temperatures range from very warm to chilly in Harrison. Average maximum daytime temperatures range from a very warm 31°C in July, the warmest time of the year, to a chilly 4°C during cooler months like February.

At night, temperatures typically drop to an average of around -4°C during these months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Harrison has a relatively rain/snowy climate with high precipitation levels, averaging 1263 mm of rain/snowfall annually. While rainfall varies throughout the year, each season offers its own charm. June brings wetter days averaging 136 mm of precipitation, spread over 13 rainy days.

In contrast, November experiences a drier climate, with about 76 mm of rainfall spread across 8 rainy days.

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

Sunshine over the year

Seasonal changes in sunshine hours are quite dramatic in Harrison. While July receives considerable daily sunshine with up to 9.0 hours, December marks the darkest time of the year, where sunshine is scarce with only 4.7 hours of sunlight per day. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: New York City, the United States of America (21 KM, 13 Miles).

Daily hours of sunshine

Data from: New York City, the United States of America (21 KM, 13 Miles).

Average water temperature

The mean water temperature over the year ranges from 4°C in February to 23°C in August.

Water temperature over the year

Data from: New York City, the United States of America (21 KM, 13 Miles).

Forecast for Harrison (NJ)

Sun   Dec 22
-3°C | -10°C
NW 6 m/s
clear and no rain

clear and no rain

Mon   Dec 23
-1°C | -10°C
S 3 m/s
partly cloudy and no rain

partly cloudy and no rain

Tue   Dec 24
5°C | -3°C
W 4 m/s
4.9 mm
broken clouds and snow

broken clouds and snow

The best time of year to visit Harrison 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 Harrison?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in Harrison?
    July has an average maximum temperature of 31°C and is the warmest month of the year.
  • Which is the coldest month in Harrison?
    The coldest month is February with an average maximum temperature of 4°C.
  • Which is the wettest month in Harrison?
    June tops the wettest month list with 136 mm of rainfall.
  • Which is the driest month in Harrison?
    November is the driest month with 76 mm of precipitation.
  • Which is the sunniest month in Harrison?
    July is the sunniest month with an average of 271 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.