The most pleasant months of the year for South San Francisco are September, October and August. In South San Francisco, there are 0 comfortable months with high temperatures in the range of 70-85°. September is the hottest month for South San Francisco with an average high temperature of 69.3°, which ranks it as one of the coolest places in California. Any measurable snowfall is a rare occurance in South San Francisco. There are few days during the summer when the humidity becomes unpleasant.
Today's Weather - South San Francisco, CA
6 PM PST
|7 DAY FORECAST||DESCRIPTION||HIGH/LOW||WIND|
|Tonight||Partly Cloudy||55° / 71°||W 6 to 16 mph|
|Friday Night||Chance Rain Showers||59° / 71°||S 1 to 15 mph|
|Saturday Night||Mostly Cloudy||56° / 69°||SW 3 to 12 mph|
|Sunday Night||Mostly Cloudy||55° / 69°||W 6 to 14 mph|
|Monday Night||Partly Cloudy||55° / 72°||W 3 to 14 mph|
|Tuesday Night||Partly Cloudy||56° / 71°||W 5 to 13 mph|
|Wednesday Night||Partly Cloudy||55° / 70°||W 7 to 14 mph|
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 South San Francisco area is 8.4 (10=best), which means it is more comfortable than most places in California.
8.4 / 10
A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 7. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.
Average Monthly High and Low (°F)
Hot, Freezing, Rainy, Snowy Days: South San Francisco
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.