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Morris Plains (NJ) Weather and Climate: A Comprehensive Guide

The temperature in Morris Plains can vary quite a bit throughout the year. Temperatures can be warm during the warmest months, and cold during the cooler months. It also has a notably wet climate with much precipitation. Let’s explore the climate details in depth to provide you with a complete overview.

Average maximum day and minimum night temperature

Visitors to Morris Plains can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 30°C in July, the warmest time of the year, to a chilly 3°C during cooler months like February.

At night, temperatures typically drop to an average of around -7°C during these months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Morris Plains is known for its substantial rain/snowfall, with annual precipitation reaching 1307 mm. While rainfall varies throughout the year, each season offers its own charm. June brings wetter days averaging 138 mm of precipitation, spread over 14 rainy days.

In contrast, November experiences a drier climate, with about 82 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 Morris Plains. 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 (49 KM, 30 Miles).

Daily hours of sunshine

Data from: New York City, the United States of America (49 KM, 30 Miles).

Forecast for Morris Plains (NJ)

Sun   Dec 22
-4°C | -13°C
NW 5 m/s
clear and no rain

clear and no rain

Mon   Dec 23
-2°C | -15°C
S 3 m/s
partly cloudy and no rain

partly cloudy and no rain

Tue   Dec 24
4°C | -6°C
W 3 m/s
5.9 mm
partly cloudy and snow

partly cloudy and snow

The best time of year to visit Morris Plains 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 Morris Plains?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in Morris Plains?
    July has an average maximum temperature of 30°C and is the warmest month of the year.
  • Which is the coldest month in Morris Plains?
    The coldest month is February with an average maximum temperature of 3°C.
  • Which is the wettest month in Morris Plains?
    June tops the wettest month list with 138 mm of rainfall.
  • Which is the driest month in Morris Plains?
    November is the driest month with 82 mm of precipitation.
  • Which is the sunniest month in Morris Plains?
    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.