2025 Compare Climate & Weather:
Darien, CT vs Jamestown, RI

Highlights

On average, there are 201 sunny days per year in Jamestown. Darien averages 175 sunny days per year. The US average is 205 sunny days.

Jamestown, Rhode Island gets 48.5 inches of rain, on average, per year. Darien, Connecticut gets 50.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Jamestown averages 30.4 inches of snow per year. Darien averages 29.9 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Jamestown, Rhode Island
Summer High: the July high is around 78.9 degrees
Winter Low: the January low is 21.8
Rain: averages 48.5 inches of rain a year
Snow: averages 30.4 inches of snow a year

Darien, Connecticut
Summer High: the July high is around 83.6 degrees
Winter Low: the January low is 21.1
Rain: averages 50.8 inches of rain a year
Snow: averages 29.9 inches of snow a year

BestPlaces Comfort Index

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

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

Today's Weather - Darien, CT

61°F

Today's Weather - Jamestown, RI

56°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Darien / Jamestown

July is the hottest month for Darien with an average high temperature of 83.6°, which ranks it as warmer than most places in Connecticut. In Darien, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Darien are June, September and August.

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

January has the coldest nighttime temperatures for Darien with an average of 21.1°. This is warmer than most places in Connecticut.

January has the coldest nighttime temperatures for Jamestown with an average of 21.8°. This is one of the warmest places in Rhode Island.

In Darien, there are 8.9 days annually when the high temperature is over 90°, which is hotter than most places in Connecticut.

In Jamestown, there are 1.3 days annually when the high temperature is over 90°, which is one of the coolest places in Rhode Island.

In Darien, there are 110.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Connecticut.

In Jamestown, there are 105.3 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Rhode Island.

In Darien, there are 0.6 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Connecticut.

In Jamestown, there are 1.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Rhode Island.

September is the wettest month in Darien with 4.7 inches of rain, and the driest month is February with 3.2 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 Darien means that it is wetter than most places in Connecticut.


March is the wettest month in Jamestown with 5.1 inches of rain, and the driest month is July with 3.4 inches. The wettest season is Summer with 27% of yearly precipitation and 23% occurs in Autumn, which is the driest season. The annual rainfall of 48.5 inches in Jamestown means that it is drier than most places in Rhode Island.

April is the rainiest month in Darien with 12.3 days of rain, and October is the driest month with only 8.9 rainy days. There are 123.7 rainy days annually in Darien, 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 Jamestown with 12.3 days of rain, and July is the driest month with only 9.2 rainy days. There are 125.7 rainy days annually in Jamestown, which is rainier than most places in Rhode Island. 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 29.9 inches in Darien means that it is less snowy than most places in Connecticut.

An annual snowfall of 30.4 inches in Jamestown means that it is less snowy than most places in Rhode Island.

February is the snowiest month in Darien with 9.0 inches of snow, and 6 months of the year have significant snowfall.

February is the snowiest month in Jamestown with 8.7 inches of snow, and 6 months of the year have significant snowfall.