Grand Isle, ME Climate


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United States / Maine / No Metro Area / Aroostook County / Grand Isle / Zip Codes
Grand Isle, ME has a temperate climate with generally mild summers and cold winters. The average January temperature is 24 degrees Fahrenheit, while the average July temperature is 70 degrees Fahrenheit. Rainfall is distributed evenly throughout the year, with an average of 41 inches annually. Snowfall averages around 35 inches each winter, making for a beautiful snowy wonderland in the countryside. With its moderate temperatures and ample precipitation, Grand Isle provides ideal conditions for outdoor recreation all year round.

Grand Isle, Maine gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Grand Isle averages 96 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 159 sunny days per year in Grand Isle. The US average is 205 sunny days.

Grand Isle gets some kind of precipitation, on average, 153 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 75 degrees
Winter Low: the January low is -4
Rain: averages 37 inches of rain a year
Snow: averages 96 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Grand Isle is 5.5 (10=best), which means it is one of the least comfortable places in Maine.

8.7 Summer - 2.7 Winter
July, August and June are the most pleasant months in Grand Isle, while January and February are the least comfortable months.

  ClimateGrand Isle, MaineUnited States
  37.3 in.38.1 in.
  96.4 in.27.8 in.
  152.7 days106.2 days
  159 days205 days
  75.2°85.8°
  -3.9°21.7°
  5.57
  2.84.3
  499 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 Grand Isle with an average high temperature of 75.2°, which ranks it as one of the coolest places in Maine. In Grand Isle, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Grand Isle are July, August and June.
In Grand Isle, there are 0.9 days annually when the high temperature is over 90°, which is one of the coolest places in Maine.
January has the coldest nighttime temperatures for Grand Isle with an average of -3.9°. This is one of the coldest places in Maine.
In Grand Isle, there are 192.2 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Maine.
In Grand Isle, there are 51.3 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Maine.
Humidity in Grand Isle 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.
July is the wettest month in Grand Isle with 4.6 inches of rain, and the driest month is February with 1.6 inches. The wettest season is Autumn with 33% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 37.3 inches in Grand Isle means that it is one of the driest places in Maine.
July is the rainiest month in Grand Isle with 14.6 days of rain, and February is the driest month with only 10.4 rainy days. There are 152.7 rainy days annually in Grand Isle, which is one of the rainiest places in Maine. The rainiest season is Autumn when it rains 27% of the time and the driest is Spring with only a 24% chance of a rainy day.
An annual snowfall of 96.4 inches in Grand Isle means that it is one of the snowiest places in Maine. January is the snowiest month in Grand Isle with 23.2 inches of snow, and 7 months of the year have significant snowfall.
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