2025 Compare Climate & Weather:
Hamilton, NY vs Groton, MA

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Highlights

On average, there are 200 sunny days per year in Groton. Hamilton averages 160 sunny days per year. The US average is 205 sunny days.

Groton, Massachusetts gets 47.3 inches of rain, on average, per year. Hamilton, New York gets 42.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Groton averages 56.5 inches of snow per year. Hamilton averages 86.3 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Groton, Massachusetts
Summer High: the July high is around 83.3 degrees
Winter Low: the January low is 14
Rain: averages 47.3 inches of rain a year
Snow: averages 56.5 inches of snow a year

Hamilton, New York
Summer High: the July high is around 78.9 degrees
Winter Low: the January low is 11.4
Rain: averages 42.5 inches of rain a year
Snow: averages 86.3 inches of snow a year

BestPlaces Comfort Index

Groton

The annual BestPlaces Comfort Index for Groton is 6.7 (10=best), which means it is less comfortable than most places in Massachusetts.

6.7 / 10

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

Hamilton

The annual BestPlaces Comfort Index for Hamilton is 6.1 (10=best), which means it is one of the least comfortable places in New York.

6.1 / 10

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

Average Monthly High / Low (°F)

Month	Hamilton, NY	Groton, MA
January	30° / 11°	33° / 14°
February	33° / 13°	37° / 17°
March	41° / 21°	45° / 24°
April	55° / 32°	59° / 35°
May	67° / 42°	69° / 45°
June	75° / 52°	78° / 55°
July	79° / 56°	83° / 60°
August	78° / 55°	82° / 58°
September	70° / 48°	73° / 50°
October	58° / 36°	61° / 38°
November	46° / 29°	50° / 30°
December	34° / 18°	38° / 21°

Hot, Freezing, Rainy, Snowy Days: Hamilton / Groton

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	30 / 30	18 / 11	13 / 7
February	0 / 0	26 / 27	14 / 9	10 / 6
March	0 / 0	26 / 26	14 / 11	8 / 5
April	0 / 0	15 / 11	14 / 11	2 / 1
May	0 / 1	4 / 1	14 / 13	0 / 0
June	1 / 2	0 / 0	14 / 12	0 / 0
July	1 / 5	0 / 0	12 / 10	0 / 0
August	1 / 3	0 / 0	12 / 10	0 / 0
September	0 / 1	1 / 1	13 / 9	0 / 0
October	0 / 0	10 / 8	14 / 10	1 / 0
November	0 / 0	20 / 19	15 / 11	5 / 2
December	0 / 0	28 / 28	17 / 11	11 / 5

July is the hottest month for Hamilton with an average high temperature of 78.9°, which ranks it as one of the coolest places in New York. In Hamilton, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Hamilton are August, July and June.

July is the hottest month for Groton with an average high temperature of 83.3°, which ranks it as one of the hottest places in Massachusetts. In Groton, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Groton are June, August and September.

January has the coldest nighttime temperatures for Hamilton with an average of 11.4°. This is colder than most places in New York.

January has the coldest nighttime temperatures for Groton with an average of 14.0°. This is colder than most places in Massachusetts.

In Hamilton, there are 2.7 days annually when the high temperature is over 90°, which is cooler than most places in New York.

In Groton, there are 11.6 days annually when the high temperature is over 90°, which is one of the hottest places in Massachusetts.

In Hamilton, there are 160.4 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in New York.

In Groton, there are 149.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Massachusetts.

In Hamilton, there are 15.0 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in New York.

In Groton, there are 5.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Massachusetts.

June is the wettest month in Hamilton with 4.5 inches of rain, and the driest month is February with 2.5 inches. The wettest season is Autumn with 29% of yearly precipitation and 20% occurs in Spring, which is the driest season. The annual rainfall of 42.5 inches in Hamilton means that it is drier than most places in New York.

October is the wettest month in Groton with 4.4 inches of rain, and the driest month is February with 3.1 inches. The wettest season is Winter with 26% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 47.3 inches in Groton means that it is drier than most places in Massachusetts.

January is the rainiest month in Hamilton with 17.5 days of rain, and August is the driest month with only 11.8 rainy days. There are 170.1 rainy days annually in Hamilton, which is one of the rainiest places in New York. The rainiest season is Spring when it rains 28% of the time and the driest is Autumn with only a 22% chance of a rainy day.

May is the rainiest month in Groton with 12.6 days of rain, and February is the driest month with only 8.8 rainy days. There are 126.4 rainy days annually in Groton, which is about average compared to other places in Massachusetts. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 24% chance of a rainy day.

An annual snowfall of 86.3 inches in Hamilton means that it is snowier than most places in New York.

An annual snowfall of 56.5 inches in Groton means that it is one of the snowiest places in Massachusetts.

January is the snowiest month in Hamilton with 22.6 inches of snow, and 7 months of the year have significant snowfall.

January is the snowiest month in Groton with 17.1 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

Many people confuse Weather and Climate, but they are different. Weather refers to the conditions of the atmosphere over a short period of time, while Climate refers to the conditions of the atmosphere over a long period of time.

Weather, more specifically, refers to how the atmosphere behaves and its effects on life and human activities. Most people think of Weather in terms of what can be observed: temperature, humidity, precipitation, and cloudy/sunny conditions. Weather conditions constantly change on a minute-to-minute basis.

Climate is a record of the average weather conditions for a given place over a long period of time, often referred to as Climate Normals. A 30-year period of record is a common requirement to be considered a Climate Normal.

Reviews for Hamilton 2 Reviews

Jill · Sherman Oaks, CA

re:

Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't More

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NC For Me · Apex, NC

re:

Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but More

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Reviews for Groton 2 Reviews

Jill · Sherman Oaks, CA

re:

Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't More

| Reply

NC For Me · Apex, NC

re:

Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but More

| Reply

Start Your Review of Groton

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2025 Compare Climate & Weather:
Hamilton, NY vs Groton, MA

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Hamilton / Groton

January has the coldest nighttime temperatures for Hamilton with an average of 11.4°. This is colder than most places in New York.

January has the coldest nighttime temperatures for Groton with an average of 14.0°. This is colder than most places in Massachusetts.

In Hamilton, there are 2.7 days annually when the high temperature is over 90°, which is cooler than most places in New York.

In Groton, there are 11.6 days annually when the high temperature is over 90°, which is one of the hottest places in Massachusetts.

In Hamilton, there are 160.4 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in New York.

In Groton, there are 149.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Massachusetts.

In Hamilton, there are 15.0 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in New York.

In Groton, there are 5.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Massachusetts.

An annual snowfall of 86.3 inches in Hamilton means that it is snowier than most places in New York.

An annual snowfall of 56.5 inches in Groton means that it is one of the snowiest places in Massachusetts.

January is the snowiest month in Hamilton with 22.6 inches of snow, and 7 months of the year have significant snowfall.

January is the snowiest month in Groton with 17.1 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

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Reviews for Groton 2 Reviews

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2025 Compare Climate & Weather:Hamilton, NY vs Groton, MA

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Hamilton / Groton

January has the coldest nighttime temperatures for Hamilton with an average of 11.4°. This is colder than most places in New York.January has the coldest nighttime temperatures for Groton with an average of 14.0°. This is colder than most places in Massachusetts.

In Hamilton, there are 2.7 days annually when the high temperature is over 90°, which is cooler than most places in New York.In Groton, there are 11.6 days annually when the high temperature is over 90°, which is one of the hottest places in Massachusetts.

In Hamilton, there are 160.4 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in New York.In Groton, there are 149.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Massachusetts.

In Hamilton, there are 15.0 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in New York.In Groton, there are 5.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Massachusetts.

An annual snowfall of 86.3 inches in Hamilton means that it is snowier than most places in New York.An annual snowfall of 56.5 inches in Groton means that it is one of the snowiest places in Massachusetts.

January is the snowiest month in Hamilton with 22.6 inches of snow, and 7 months of the year have significant snowfall.January is the snowiest month in Groton with 17.1 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Hamilton 2 Reviews

Reviews for Groton 2 Reviews

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2025 Compare Climate & Weather:
Hamilton, NY vs Groton, MA

January has the coldest nighttime temperatures for Hamilton with an average of 11.4°. This is colder than most places in New York.

January has the coldest nighttime temperatures for Groton with an average of 14.0°. This is colder than most places in Massachusetts.

In Hamilton, there are 2.7 days annually when the high temperature is over 90°, which is cooler than most places in New York.

In Groton, there are 11.6 days annually when the high temperature is over 90°, which is one of the hottest places in Massachusetts.

In Hamilton, there are 160.4 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in New York.

In Groton, there are 149.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Massachusetts.

In Hamilton, there are 15.0 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in New York.

In Groton, there are 5.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Massachusetts.

An annual snowfall of 86.3 inches in Hamilton means that it is snowier than most places in New York.

An annual snowfall of 56.5 inches in Groton means that it is one of the snowiest places in Massachusetts.

January is the snowiest month in Hamilton with 22.6 inches of snow, and 7 months of the year have significant snowfall.

January is the snowiest month in Groton with 17.1 inches of snow, and 6 months of the year have significant snowfall.