2025 Compare Climate & Weather:
New Canaan, CT vs Napa, CA

Highlights

On average, there are 260 sunny days per year in Napa. New Canaan averages 202 sunny days per year. The US average is 205 sunny days.

Napa, California gets 27.3 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.

Napa averages 0 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

Napa, California
Summer High: the July high is around 82.4 degrees
Winter Low: the January low is 37.7
Rain: averages 27.3 inches of rain a year
Snow: averages 0 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 Napa is 8.4 (10=best), which means it is more comfortable than most places in California.

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 - Napa, CA

55°F

Average Monthly High / Low (°F)

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

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.

August is the hottest month for Napa with an average high temperature of 83.0°, which ranks it as cooler than most places in California. In Napa, there are 7 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Napa are October, May and June.

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

December has the coldest nighttime temperatures for Napa with an average of 37.4°. This is about average compared to other places in California.

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 Napa, there are 24.6 days annually when the high temperature is over 90°, which is cooler than most places in California.

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 Napa, there are 21.3 days annually when the nighttime low temperature falls below freezing, which is colder than most places in California.

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 Napa, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.

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.


February is the wettest month in Napa with 5.4 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 58% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 27.3 inches in Napa means that it is wetter than most places in California.

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.

December is the rainiest month in Napa with 12.0 days of rain, and July is the driest month with only 0.1 rainy days. There are 68.6 rainy days annually in Napa, which is rainier than most places in California. The rainiest season is Spring when it rains 50% of the time and the driest is Autumn with only a 2% 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.

There is rarely any recorded snowfall in Napa, ranking it as one of the least snowy places in California.

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

Any measurable snowfall is a rare occurance in Napa.