Coos County, NH Climate

Coos County, New Hampshire has a humid continental climate with warm summers and cold winters. The area receives an average of 229 days of sunshine each year with moderate precipitation and humidity levels. During the summer months, temperatures range between 60-80°F (15-27°C) while in winter it can get as low as -20°F (-29°C). Rainfall is typically moderate throughout the year, but snowfall can be heavy during the winter months. Overall, Coos County is known for its pleasant summers and snowy winters making it a great place to enjoy outdoor activities all year round.

Coos County, New Hampshire gets 49 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Coos County averages 119 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 198 sunny days per year in Coos County. The US average is 205 sunny days.

Coos County gets some kind of precipitation, on average, 163 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 74 degrees
Winter Low: the January low is 0
Rain: averages 49 inches of rain a year
Snow: averages 119 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Coos County is 5.4 (10=best), which means it is one of the least comfortable places in New Hampshire.

8.4 Summer - 2.7 Winter

August, July and June are the most pleasant months in Coos County, while January and December are the least comfortable months.

Climate	Coos, New Hampshire	United States
	49.1 in.	38.1 in.
	118.6 in.	27.8 in.
	162.7 days	106.2 days
	198 days	205 days
	73.9°	85.8°
	0.4°	21.7°
	5.4	7
	3	4.3
	1859 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 Coos County with an average high temperature of 73.9°, which ranks it as one of the coolest places in New Hampshire. In Coos County, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Coos County are July, August and June.

In Coos County, there are 1.1 days annually when the high temperature is over 90°, which is one of the coolest places in New Hampshire.

January has the coldest nighttime temperatures for Coos County with an average of 0.4°. This is one of the coldest places in New Hampshire.

In Coos County, there are 197.5 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in New Hampshire.

In Coos County, there are 43.6 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in New Hampshire.

Humidity in Coos 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.

August is the wettest month in Coos County with 5.0 inches of rain, and the driest month is February with 2.9 inches. The wettest season is Autumn with 30% of yearly precipitation and 20% occurs in Spring, which is the driest season. The annual rainfall of 49.1 inches in Coos County means that it is wetter than most places in New Hampshire.

December is the rainiest month in Coos County with 15.7 days of rain, and September is the driest month with only 11.5 rainy days. There are 162.7 rainy days annually in Coos County, which is one of the rainiest places in New Hampshire. The rainiest season is Spring when it rains 26% of the time and the driest is Winter with only a 24% chance of a rainy day.

An annual snowfall of 118.6 inches in Coos County means that it is one of the snowiest places in New Hampshire. December is the snowiest month in Coos County with 25.7 inches of snow, and 8 months of the year have significant snowfall.

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