2025 Compare Climate & Weather:
San Jose, CA vs New Haven, CT

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Highlights

On average, there are 204 sunny days per year in New Haven. San Jose averages 257 sunny days per year. The US average is 205 sunny days.

New Haven, Connecticut gets 48.1 inches of rain, on average, per year. San Jose, California gets 17.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

New Haven averages 29.1 inches of snow per year. San Jose averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

New Haven, Connecticut
Summer High: the July high is around 83.4 degrees
Winter Low: the January low is 20.5
Rain: averages 48.1 inches of rain a year
Snow: averages 29.1 inches of snow a year

San Jose, California
Summer High: the July high is around 81.9 degrees
Winter Low: the January low is 41.6
Rain: averages 17.2 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

New Haven

The annual BestPlaces Comfort Index for New Haven is 7.2 (10=best), which means it is one of the most pleasant places in Connecticut.

7.2 / 10

June, September and August are the most pleasant months in New Haven, while January and February are the least comfortable months.

San Jose

The annual BestPlaces Comfort Index for San Jose is 8.8 (10=best), which means it is more comfortable than most places in California.

8.8 / 10

August, July and June are the most pleasant months in San Jose, while January and December are the least comfortable months.

Average Monthly High / Low (°F)

Month	San Jose, CA	New Haven, CT
January	58° / 42°	38° / 21°
February	62° / 44°	41° / 23°
March	66° / 46°	48° / 30°
April	69° / 48°	59° / 39°
May	74° / 52°	70° / 49°
June	79° / 55°	79° / 59°
July	82° / 58°	83° / 64°
August	82° / 58°	82° / 63°
September	80° / 56°	75° / 55°
October	74° / 52°	64° / 44°
November	64° / 46°	53° / 35°
December	58° / 42°	42° / 26°

Hot, Freezing, Rainy, Snowy Days: San Jose / New Haven

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	2 / 28	10 / 9	0 / 4
February	0 / 0	1 / 25	10 / 8	0 / 3
March	0 / 0	0 / 19	10 / 9	0 / 2
April	1 / 0	0 / 4	6 / 10	0 / 0
May	1 / 0	0 / 0	3 / 11	0 / 0
June	3 / 1	0 / 0	1 / 9	0 / 0
July	4 / 3	0 / 0	0 / 8	0 / 0
August	4 / 2	0 / 0	0 / 8	0 / 0
September	3 / 1	0 / 0	1 / 8	0 / 0
October	1 / 0	0 / 2	3 / 8	0 / 0
November	0 / 0	0 / 11	7 / 9	0 / 0
December	0 / 0	2 / 23	10 / 9	0 / 3

August is the hottest month for San Jose with an average high temperature of 81.9°, which ranks it as cooler than most places in California. In San Jose, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for San Jose are June, September and May.

July is the hottest month for New Haven with an average high temperature of 83.4°, which ranks it as warmer than most places in Connecticut. In New Haven, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for New Haven are June, September and August.

December has the coldest nighttime temperatures for San Jose with an average of 41.5°. This is warmer than most places in California.

January has the coldest nighttime temperatures for New Haven with an average of 20.5°. This is warmer than most places in Connecticut.

In San Jose, there are 16.9 days annually when the high temperature is over 90°, which is cooler than most places in California.

In New Haven, there are 7.6 days annually when the high temperature is over 90°, which is about average compared to other places in Connecticut.

In San Jose, there are 4.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In New Haven, there are 112.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Connecticut.

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

In New Haven, there are 1.1 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Connecticut.

February is the wettest month in San Jose with 3.5 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 57% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 17.2 inches in San Jose means that it is about average compared to other places in California.

April is the wettest month in New Haven with 4.5 inches of rain, and the driest month is February with 3.1 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 48.1 inches in New Haven means that it is drier than most places in Connecticut.

December is the rainiest month in San Jose with 10.3 days of rain, and July is the driest month with only 0.2 rainy days. There are 61.8 rainy days annually in San Jose, 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.

May is the rainiest month in New Haven with 10.7 days of rain, and August is the driest month with only 7.8 rainy days. There are 107.7 rainy days annually in New Haven, which is one of the least rainy 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.

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

An annual snowfall of 29.1 inches in New Haven means that it is less snowy than most places in Connecticut.

Any measurable snowfall is a rare occurance in San Jose.

January is the snowiest month in New Haven with 8.4 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 San Jose 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

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Reviews for New Haven 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

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2025 Compare Climate & Weather:
San Jose, CA vs New Haven, CT

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: San Jose / New Haven

December has the coldest nighttime temperatures for San Jose with an average of 41.5°. This is warmer than most places in California.

January has the coldest nighttime temperatures for New Haven with an average of 20.5°. This is warmer than most places in Connecticut.

In San Jose, there are 16.9 days annually when the high temperature is over 90°, which is cooler than most places in California.

In New Haven, there are 7.6 days annually when the high temperature is over 90°, which is about average compared to other places in Connecticut.

In San Jose, there are 4.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In New Haven, there are 112.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Connecticut.

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

An annual snowfall of 29.1 inches in New Haven means that it is less snowy than most places in Connecticut.

Any measurable snowfall is a rare occurance in San Jose.

January is the snowiest month in New Haven with 8.4 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

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Reviews for New Haven 2 Reviews

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2025 Compare Climate & Weather:San Jose, CA vs New Haven, CT

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: San Jose / New Haven

December has the coldest nighttime temperatures for San Jose with an average of 41.5°. This is warmer than most places in California.January has the coldest nighttime temperatures for New Haven with an average of 20.5°. This is warmer than most places in Connecticut.

In San Jose, there are 16.9 days annually when the high temperature is over 90°, which is cooler than most places in California.In New Haven, there are 7.6 days annually when the high temperature is over 90°, which is about average compared to other places in Connecticut.

In San Jose, there are 4.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.In New Haven, there are 112.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Connecticut.

There is rarely any recorded snowfall in San Jose, ranking it as one of the least snowy places in California.An annual snowfall of 29.1 inches in New Haven means that it is less snowy than most places in Connecticut.

Any measurable snowfall is a rare occurance in San Jose.January is the snowiest month in New Haven with 8.4 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for San Jose 2 Reviews

Reviews for New Haven 2 Reviews

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Zips In San Jose, California

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2025 Compare Climate & Weather:
San Jose, CA vs New Haven, CT

December has the coldest nighttime temperatures for San Jose with an average of 41.5°. This is warmer than most places in California.

January has the coldest nighttime temperatures for New Haven with an average of 20.5°. This is warmer than most places in Connecticut.

In San Jose, there are 16.9 days annually when the high temperature is over 90°, which is cooler than most places in California.

In New Haven, there are 7.6 days annually when the high temperature is over 90°, which is about average compared to other places in Connecticut.

In San Jose, there are 4.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In New Haven, there are 112.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Connecticut.

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

An annual snowfall of 29.1 inches in New Haven means that it is less snowy than most places in Connecticut.

Any measurable snowfall is a rare occurance in San Jose.

January is the snowiest month in New Haven with 8.4 inches of snow, and 6 months of the year have significant snowfall.