Zip 94104 (San Francisco, CA) Climate

94104 San Francisco, CA has a mild climate with relatively warm summers and cool winters. Average summer temperatures range from the high 50s to mid 70s, while winter temperatures range from the low 40s to mid 50s. Rainfall is light throughout the year, with average precipitation between 25 and 30 inches annually. The area is known for its famous foggy mornings, though it generally burns off by late morning or early afternoon. San Francisco enjoys a unique Mediterranean climate that makes it an ideal place for outdoor activities year-round.

San Francisco (zip 94104), California gets 23 inches of rain, on average, per year. The US average is 38 inches of rain per year.

San Francisco (zip 94104) averages 0 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 260 sunny days per year in San Francisco (zip 94104). The US average is 205 sunny days.

San Francisco (zip 94104) gets some kind of precipitation, on average, 69 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 70 degrees
Winter Low: the January low is 46
Rain: averages 23 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 94104 zip code is 8.6 (10=best), which means it is more comfortable than most places in California.

9.5 Summer - 7.6 Winter

September, August and July are the most pleasant months in the 94104 zip code, while January and December are the least comfortable months.

Climate	San Francisco, California	United States
	22.8 in.	38.1 in.
	0.0 in.	27.8 in.
	68.6 days	106.2 days
	260 days	205 days
	70.0°	85.8°
	45.5°	21.7°
	8.6	7
	5.4	4.3
	169 ft.	2443 ft.

Climate

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

September is the hottest month for the 94104 zip code with an average high temperature of 72.7°, which ranks it as one of the coolest places in California. In the 94104 zip code, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 94104 zip code are September, August and October.

In the 94104 zip code, there are 2.9 days annually when the high temperature is over 90°, which is one of the coolest places in California.

January has the coldest nighttime temperatures for the 94104 zip code with an average of 45.5°. This is one of the warmest places in California.

In the 94104 zip code, there are 0.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.

In the 94104 zip code, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.

Humidity in the 94104 zip code is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are August, July and September.

January is the wettest month in the 94104 zip code with 4.5 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 22.8 inches in the 94104 zip code means that it is wetter than most places in California.

March is the rainiest month in the 94104 zip code with 11.0 days of rain, and July is the driest month with only 0.3 rainy days. There are 68.6 rainy days annually in the 94104 zip code, which is rainier than most places in California. The rainiest season is Spring when it rains 47% of the time and the driest is Autumn with only a 3% chance of a rainy day.

There is rarely any recorded snowfall in the 94104 zip code, ranking it as one of the least snowy places in California. Any measurable snowfall is a rare occurance in the 94104 zip code.

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