Zip 94080 (South San Francisco, CA) Climate

The climate in 94080 South San Francisco, CA is very mild all year round, with temperatures rarely dipping below 40°F or reaching above 80°F. During the summer months, temperatures can reach into the upper 70s and occasionally soar above 80°F. Winters are usually mild to moderately cool, with rain showers from December through April and occasional snowfall during the colder winter months. The area enjoys moderate humidity levels throughout the year and is surrounded by ocean breezes that help keep temperatures more comfortable. Overall, 94080 South San Francisco offers a mild and comfortable climate most of the year.

South San Francisco (zip 94080), California gets 22 inches of rain, on average, per year. The US average is 38 inches of rain per year.

South San Francisco (zip 94080) 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 South San Francisco (zip 94080). The US average is 205 sunny days.

South San Francisco (zip 94080) gets some kind of precipitation, on average, 68 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 67 degrees
Winter Low: the January low is 45
Rain: averages 22 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 94080 zip code is 8.4 (10=best), which means it is more comfortable than most places in California.

9.2 Summer - 7.5 Winter

September, August and July are the most pleasant months in the 94080 zip code, while January and December are the least comfortable months.

Climate	South San Francisco, California	United States
	21.7 in.	38.1 in.
	0.0 in.	27.8 in.
	68.4 days	106.2 days
	260 days	205 days
	66.7°	85.8°
	45.0°	21.7°
	8.4	7
	4.9	4.3
	197 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 94080 zip code with an average high temperature of 69.3°, which ranks it as one of the coolest places in California. In the 94080 zip code, there are 0 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 94080 zip code are September, October and August.

In the 94080 zip code, there are 1.8 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 94080 zip code with an average of 45.0°. This is one of the warmest places in California.

In the 94080 zip code, there are 0.3 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.

In the 94080 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 94080 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 94080 zip code with 4.3 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 21.7 inches in the 94080 zip code means that it is wetter than most places in California.

December is the rainiest month in the 94080 zip code with 11.4 days of rain, and July is the driest month with only 0.2 rainy days. There are 68.4 rainy days annually in the 94080 zip code, 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 3% chance of a rainy day.

There is rarely any recorded snowfall in the 94080 zip code, ranking it as one of the least snowy places in California. Any measurable snowfall is a rare occurance in the 94080 zip code.

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