2025 Compare Climate & Weather:
New Canaan, CT vs Acton, MA

Highlights

On average, there are 199 sunny days per year in Acton. New Canaan averages 202 sunny days per year. The US average is 205 sunny days.

Acton, Massachusetts gets 48 inches of rain, on average, per year. New Canaan, Connecticut gets 51.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Acton averages 50.6 inches of snow per year. New Canaan averages 34.2 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Acton, Massachusetts
Summer High: the July high is around 83.1 degrees
Winter Low: the January low is 16.2
Rain: averages 48 inches of rain a year
Snow: averages 50.6 inches of snow a year

New Canaan, Connecticut
Summer High: the July high is around 83.2 degrees
Winter Low: the January low is 19.6
Rain: averages 51.6 inches of rain a year
Snow: averages 34.2 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Acton is 6.9 (10=best), which means it is about average compared to other places in Massachusetts.

The annual BestPlaces Comfort Index for New Canaan is 7.0 (10=best), which means it is about average compared to other places in Connecticut.

Today's Weather - New Canaan, CT

53°F

Today's Weather - Acton, MA

46°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: New Canaan / Acton

July is the hottest month for New Canaan with an average high temperature of 83.2°, which ranks it as about average compared to other places in Connecticut. In New Canaan, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for New Canaan are June, August and September.

July is the hottest month for Acton with an average high temperature of 83.1°, which ranks it as warmer than most places in Massachusetts. In Acton, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Acton are June, August and September.

January has the coldest nighttime temperatures for New Canaan with an average of 19.6°. This is warmer than most places in Connecticut.

January has the coldest nighttime temperatures for Acton with an average of 16.2°. This is colder than most places in Massachusetts.

In New Canaan, there are 8.8 days annually when the high temperature is over 90°, which is hotter than most places in Connecticut.

In Acton, there are 11.4 days annually when the high temperature is over 90°, which is hotter than most places in Massachusetts.

In New Canaan, there are 119.8 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Connecticut.

In Acton, there are 133.5 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Massachusetts.

In New Canaan, there are 1.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Connecticut.

In Acton, there are 4.2 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Massachusetts.

September is the wettest month in New Canaan with 4.7 inches of rain, and the driest month is February with 3.2 inches. The wettest season is Summer with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 51.6 inches in New Canaan means that it is wetter than most places in Connecticut.


March is the wettest month in Acton with 4.6 inches of rain, and the driest month is February with 3.3 inches. The wettest season is Summer with 26% of yearly precipitation and 23% occurs in Spring, which is the driest season. The annual rainfall of 48.0 inches in Acton means that it is about average compared to other places in Massachusetts.

April is the rainiest month in New Canaan with 12.2 days of rain, and October is the driest month with only 8.8 rainy days. There are 123.2 rainy days annually in New Canaan, which is rainier than most places in Connecticut. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 23% chance of a rainy day.

May is the rainiest month in Acton with 12.6 days of rain, and September is the driest month with only 8.9 rainy days. There are 128.6 rainy days annually in Acton, which is rainier than most places in Massachusetts. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 23% chance of a rainy day.

An annual snowfall of 34.2 inches in New Canaan means that it is about average compared to other places in Connecticut.

An annual snowfall of 50.6 inches in Acton means that it is snowier than most places in Massachusetts.

January is the snowiest month in New Canaan with 10.3 inches of snow, and 6 months of the year have significant snowfall.

January is the snowiest month in Acton with 15.4 inches of snow, and 6 months of the year have significant snowfall.