Groton, NH Climate


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United States / New Hampshire / No Metro Area / Grafton County / Groton / Zip Codes
Groton, NH has a humid continental climate, characterized by cool to cold winters and warm to hot summers. The area typically receives around 35 inches of precipitation annually, with snowfall averaging 56 inches per season. The town has a distinct seasonal variation in temperature as winter lows average around 8°F and summer highs can reach up to 85°F. Groton's proximity to the White Mountains makes it an especially great destination for outdoor recreation in both the warmer and colder months.

Groton, New Hampshire gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Groton averages 72 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 194 sunny days per year in Groton. The US average is 205 sunny days.

Groton gets some kind of precipitation, on average, 134 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 79 degrees
Winter Low: the January low is 6
Rain: averages 44 inches of rain a year
Snow: averages 72 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Groton is 6.1 (10=best), which means it is less comfortable than most places in New Hampshire.

8.9 Summer - 3.6 Winter
August, July and June are the most pleasant months in Groton, while January and February are the least comfortable months.

  ClimateGroton, New HampshireUnited States
  44.2 in.38.1 in.
  71.6 in.27.8 in.
  134.4 days106.2 days
  194 days205 days
  78.7°85.8°
  5.5°21.7°
  6.17
  3.14.3
  636 ft.2443 ft.
Climate
YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for Groton with an average high temperature of 78.7°, which ranks it as cooler than most places in New Hampshire. In Groton, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Groton are August, July and June.
In Groton, there are 2.4 days annually when the high temperature is over 90°, which is cooler than most places in New Hampshire.
January has the coldest nighttime temperatures for Groton with an average of 5.5°. This is colder than most places in New Hampshire.
In Groton, there are 185.8 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in New Hampshire.
In Groton, there are 26.9 days annually when the nighttime low temperature falls below zero°, which is colder than most places in New Hampshire.
Humidity in Groton is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are July, August and June.
October is the wettest month in Groton with 4.5 inches of rain, and the driest month is February with 2.8 inches. The wettest season is Autumn with 28% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 44.2 inches in Groton means that it is about average compared to other places in New Hampshire.
June is the rainiest month in Groton with 12.8 days of rain, and February is the driest month with only 9.5 rainy days. There are 134.4 rainy days annually in Groton, which is rainier than most places in New Hampshire. The rainiest season is Autumn when it rains 26% of the time and the driest is Spring with only a 24% chance of a rainy day.
An annual snowfall of 71.6 inches in Groton means that it is snowier than most places in New Hampshire. January is the snowiest month in Groton with 19.6 inches of snow, and 6 months of the year have significant snowfall.
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