Haddam, CT Climate

Haddam, Connecticut has a humid continental climate which brings with it hot summers, cold winters, and plentiful precipitation throughout the year. The average summer temperature in Haddam is a comfortable 73 degrees Fahrenheit (23 Celsius) and the average winter temperature is around 24 degrees Fahrenheit (-4 Celsius). Rainfall is abundant, with an average annual precipitation of 44 inches (112 cm). Snowfall can be quite heavy during the winter months; however, temperatures rarely dip below 0 degrees Fahrenheit (-17 Celsius).

Haddam, Connecticut gets 51 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Haddam averages 34 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 192 sunny days per year in Haddam. The US average is 205 sunny days.

Haddam gets some kind of precipitation, on average, 113 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 84 degrees
Winter Low: the January low is 19
Rain: averages 51 inches of rain a year
Snow: averages 34 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Haddam is 7.1 (10=best), which means it is more comfortable than most places in Connecticut.

9.2 Summer - 5.2 Winter

August, June and July are the most pleasant months in Haddam, while January and February are the least comfortable months.

Climate	Haddam, Connecticut	United States
	Unlock	38.1 in.
	33.9 in.	Unlock
	Unlock	106.2 days
	192 days	Unlock
	84.4°	85.8°
	Unlock	21.7°
	7.1	Unlock
	Unlock	4.3
	82 ft.	Unlock

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 Haddam with an average high temperature of 84.4°, which ranks it as one of the hottest places in Connecticut. In Haddam, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Haddam are June, September and August.

In Haddam, there are 10.7 days annually when the high temperature is over 90°, which is hotter than most places in Connecticut.

January has the coldest nighttime temperatures for Haddam with an average of 19.2°. This is warmer than most places in Connecticut.

In Haddam, there are 119.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Connecticut.

In Haddam, there are 2.3 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Connecticut.

The humidity is usually comfortable in Haddam but some summer days can be muggy. July is the most humid month, though it is still relatively mild compared to many other places. The most humid months are July, August and June.

October is the wettest month in Haddam with 5.1 inches of rain, and the driest month is February with 3.4 inches. The wettest season is Winter with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 50.8 inches in Haddam means that it is wetter than most places in Connecticut.

May is the rainiest month in Haddam with 10.8 days of rain, and August is the driest month with only 8.4 rainy days. There are 113.4 rainy days annually in Haddam, which is less rainy than most places in Connecticut. The rainiest season is Summer when it rains 27% of the time and the driest is Winter with only a 24% chance of a rainy day.

An annual snowfall of 33.9 inches in Haddam means that it is about average compared to other places in Connecticut. January is the snowiest month in Haddam with 10.3 inches of snow, and 6 months of the year have significant snowfall.

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