2025 Compare Climate & Weather:
San Francisco, CA vs Detroit, MI

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Highlights

On average, there are 183 sunny days per year in Detroit. San Francisco averages 259 sunny days per year. The US average is 205 sunny days.

Detroit, Michigan gets 33.5 inches of rain, on average, per year. San Francisco, California gets 24.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Detroit averages 33 inches of snow per year. San Francisco averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Detroit, Michigan
Summer High: the July high is around 83.5 degrees
Winter Low: the January low is 18.5
Rain: averages 33.5 inches of rain a year
Snow: averages 33 inches of snow a year

San Francisco, California
Summer High: the July high is around 67.2 degrees
Winter Low: the January low is 45.5
Rain: averages 24.6 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

Detroit

The annual BestPlaces Comfort Index for Detroit is 6.9 (10=best), which means it is one of the most pleasant places in Michigan.

6.9 / 10

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

San Francisco

The annual BestPlaces Comfort Index for San Francisco is 8.5 (10=best), which means it is more comfortable than most places in California.

8.5 / 10

September, August and October are the most pleasant months in San Francisco, while January and December are the least comfortable months.

Average Monthly High / Low (°F)

Month	San Francisco, CA	Detroit, MI
January	58° / 46°	32° / 19°
February	60° / 47°	35° / 20°
March	62° / 49°	45° / 27°
April	63° / 50°	58° / 38°
May	65° / 52°	69° / 48°
June	67° / 54°	79° / 58°
July	67° / 55°	84° / 63°
August	69° / 56°	82° / 62°
September	70° / 56°	74° / 54°
October	69° / 54°	61° / 42°
November	64° / 50°	49° / 33°
December	58° / 46°	36° / 24°

Hot, Freezing, Rainy, Snowy Days: San Francisco / Detroit

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	0 / 28	12 / 11	0 / 7
February	0 / 0	0 / 25	11 / 9	0 / 6
March	0 / 0	0 / 23	11 / 10	0 / 3
April	0 / 0	0 / 7	6 / 12	0 / 1
May	0 / 0	0 / 1	4 / 11	0 / 0
June	0 / 2	0 / 0	2 / 10	0 / 0
July	0 / 4	0 / 0	1 / 10	0 / 0
August	0 / 3	0 / 0	1 / 9	0 / 0
September	1 / 0	0 / 0	2 / 9	0 / 0
October	0 / 0	0 / 3	4 / 10	0 / 0
November	0 / 0	0 / 14	9 / 11	0 / 1
December	0 / 0	0 / 26	12 / 12	0 / 5

September is the hottest month for San Francisco with an average high temperature of 69.9°, which ranks it as one of the coolest places in California. In San Francisco, there are 0 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for San Francisco are September, October and August.

July is the hottest month for Detroit with an average high temperature of 83.5°, which ranks it as one of the hottest places in Michigan. In Detroit, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Detroit are June, August and September.

January has the coldest nighttime temperatures for San Francisco with an average of 45.5°. This is one of the warmest places in California.

January has the coldest nighttime temperatures for Detroit with an average of 18.5°. This is one of the warmest places in Michigan.

In San Francisco, there are 1.9 days annually when the high temperature is over 90°, which is one of the coolest places in California.

In Detroit, there are 9.5 days annually when the high temperature is over 90°, which is one of the hottest places in Michigan.

In San Francisco, there are 0.3 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.

In Detroit, there are 126.7 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Michigan.

In San Francisco, 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 Detroit, there are 2.3 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Michigan.

January is the wettest month in San Francisco with 4.8 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 24.6 inches in San Francisco means that it is wetter than most places in California.

June is the wettest month in Detroit with 3.5 inches of rain, and the driest month is January with 1.8 inches. The wettest season is Autumn with 29% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 33.5 inches in Detroit means that it is about average compared to other places in Michigan.

December is the rainiest month in San Francisco with 11.7 days of rain, and July is the driest month with only 0.6 rainy days. There are 72.3 rainy days annually in San Francisco, which is rainier than most places in California. The rainiest season is Spring when it rains 48% of the time and the driest is Autumn with only a 4% chance of a rainy day.

December is the rainiest month in Detroit with 12.1 days of rain, and February is the driest month with only 9.0 rainy days. There are 125.2 rainy days annually in Detroit, which is less rainy than most places in Michigan. The rainiest season is Summer when it rains 26% of the time and the driest is Autumn with only a 24% chance of a rainy day.

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

An annual snowfall of 33.0 inches in Detroit means that it is one of the least snowy places in Michigan.

Any measurable snowfall is a rare occurance in San Francisco.

January is the snowiest month in Detroit with 10.2 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 Francisco 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 Detroit 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 Francisco, CA vs Detroit, MI

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: San Francisco / Detroit

January has the coldest nighttime temperatures for San Francisco with an average of 45.5°. This is one of the warmest places in California.

January has the coldest nighttime temperatures for Detroit with an average of 18.5°. This is one of the warmest places in Michigan.

In San Francisco, there are 1.9 days annually when the high temperature is over 90°, which is one of the coolest places in California.

In Detroit, there are 9.5 days annually when the high temperature is over 90°, which is one of the hottest places in Michigan.

In San Francisco, there are 0.3 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.

In Detroit, there are 126.7 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Michigan.

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

An annual snowfall of 33.0 inches in Detroit means that it is one of the least snowy places in Michigan.

Any measurable snowfall is a rare occurance in San Francisco.

January is the snowiest month in Detroit with 10.2 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

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Reviews for Detroit 2 Reviews

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2025 Compare Climate & Weather:San Francisco, CA vs Detroit, MI

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: San Francisco / Detroit

January has the coldest nighttime temperatures for San Francisco with an average of 45.5°. This is one of the warmest places in California.January has the coldest nighttime temperatures for Detroit with an average of 18.5°. This is one of the warmest places in Michigan.

In San Francisco, there are 1.9 days annually when the high temperature is over 90°, which is one of the coolest places in California.In Detroit, there are 9.5 days annually when the high temperature is over 90°, which is one of the hottest places in Michigan.

In San Francisco, there are 0.3 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.In Detroit, there are 126.7 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Michigan.

There is rarely any recorded snowfall in San Francisco, ranking it as one of the least snowy places in California.An annual snowfall of 33.0 inches in Detroit means that it is one of the least snowy places in Michigan.

Any measurable snowfall is a rare occurance in San Francisco.January is the snowiest month in Detroit with 10.2 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for San Francisco 2 Reviews

Reviews for Detroit 2 Reviews

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Zips In San Francisco, California

Zips In DETROIT, MICHIGAN

Learn More About SAN FRANCISCO, CALIFORNIA

Learn More About Detroit, Michigan

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About BestPlaces

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2025 Compare Climate & Weather:
San Francisco, CA vs Detroit, MI

January has the coldest nighttime temperatures for San Francisco with an average of 45.5°. This is one of the warmest places in California.

January has the coldest nighttime temperatures for Detroit with an average of 18.5°. This is one of the warmest places in Michigan.

In San Francisco, there are 1.9 days annually when the high temperature is over 90°, which is one of the coolest places in California.

In Detroit, there are 9.5 days annually when the high temperature is over 90°, which is one of the hottest places in Michigan.

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

An annual snowfall of 33.0 inches in Detroit means that it is one of the least snowy places in Michigan.

Any measurable snowfall is a rare occurance in San Francisco.

January is the snowiest month in Detroit with 10.2 inches of snow, and 6 months of the year have significant snowfall.