Climate in Penobscot County, Maine

Penobscot County, Maine gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Penobscot County averages 78 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 178 sunny days per year in Penobscot County. The US average is 205 sunny days.

Penobscot County gets some kind of precipitation, on average, 130 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 5
Rain: averages 43 inches of rain a year
Snow: averages 78 inches of snow a year

BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for Penobscot County is 6.2 (10=best), which means it is less comfortable than most places in Maine.

July is the hottest month for Penobscot County with an average high temperature of 79.0°, which ranks it as warmer than most places in Maine. In Penobscot County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Penobscot County are August, July and June.

In Penobscot County, there are 3.3 days annually when the high temperature is over 90°, which is about average compared to other places in Maine.

January has the coldest nighttime temperatures for Penobscot County with an average of 4.7°. This is one of the coldest places in Maine.

In Penobscot County, there are 168.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Maine.

In Penobscot County, there are 26.4 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Maine.

Humidity in Penobscot County 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.

November is the wettest month in Penobscot County with 4.3 inches of rain, and the driest month is February with 2.6 inches. The wettest season is Winter with 28% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 43.4 inches in Penobscot County means that it is drier than most places in Maine.

May is the rainiest month in Penobscot County with 12.4 days of rain, and February is the driest month with only 9.0 rainy days. There are 130.3 rainy days annually in Penobscot County, which is rainier than most places in Maine. The rainiest season is Autumn when it rains 26% of the time and the driest is Spring with only a 23% chance of a rainy day.

An annual snowfall of 77.7 inches in Penobscot County means that it is snowier than most places in Maine. January is the snowiest month in Penobscot County with 20.8 inches of snow, and 6 months of the year have significant snowfall.

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