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Plainsboro (NJ) Weather and Climate: A Comprehensive Guide

The temperature in Plainsboro can vary quite a bit throughout the year. Temperatures can be very warm during the warmest months, and cold during the cooler months. It also has a notably wet climate with much precipitation. Let's now guide you through the climate details for a complete overview.

Average maximum day and minimum night temperature

Visitors to Plainsboro can expect significant temperature changes throughout the year. 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 January.

At night, temperatures typically drop to an average of around -6°C during these months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Plainsboro is known for its substantial rain/snowfall, with annual precipitation reaching 1260 mm. While rainfall varies throughout the year, each season offers its own charm. July brings wetter days averaging 139 mm of precipitation, spread over 12 rainy days.

In contrast, February experiences a drier climate, with about 74 mm of snow/rainfall spread across 10 snowy/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 Plainsboro. 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: Trenton, the United States of America (17 KM, 11 Miles).

Daily hours of sunshine

Data from: Trenton, the United States of America (17 KM, 11 Miles).

Forecast for Plainsboro (NJ)

Sun   Dec 22
-4°C | -10°C
N 4 m/s
almost clear and no rain

almost clear and no rain

Mon   Dec 23
-2°C | -12°C
SE 2 m/s
partly cloudy and no rain

partly cloudy and no rain

Tue   Dec 24
4°C | -5°C
W 3 m/s
3.2 mm
partly cloudy and snow

partly cloudy and snow

The best time of year to visit Plainsboro 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 Plainsboro?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in Plainsboro?
    July has an average maximum temperature of 31°C and is the warmest month of the year.
  • Which is the coldest month in Plainsboro?
    The coldest month is January with an average maximum temperature of 4°C.
  • Which is the wettest month in Plainsboro?
    July tops the wettest month list with 139 mm of rainfall.
  • Which is the driest month in Plainsboro?
    February is the driest month with 74 mm of precipitation.
  • Which is the sunniest month in Plainsboro?
    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.