South San Francisco
California, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
South San Francisco, CA

A sign in large font of the South San Francisco City, California, on the hills over the scenic home setting below and the far hill ranges
A sign in large font of the South San Francisco City, California, on the hills over the scenic home setting below and the far hill ranges
January, like December, is a moderate winter month in South San Francisco, California, with average temperature varying between 44.1°F (6.7°C) and 55.9°F (13.3°C). January is the coldest month, with an average high-temperature of 55.9°F (13.3°C) and an average low-temperature of 44.1°F (6.7°C). Weather in January »
February, the last month of the winter, in South San Francisco, is another mild month, with average temperature fluctuating between 60.1°F (15.6°C) and 46°F (7.8°C). In South San Francisco, California, the average high-temperature in February is practically the same as in January - a still mild 60.1°F (15.6°C). Weather in February »

March, the first month of the spring, in South San Francisco, is an enjoyable month, with average temperature fluctuating between 48°F (8.9°C) and 62.1°F (16.7°C). In March, the average high-temperature is practically the same as in February - a comfortable 62.1°F (16.7°C). Weather in March »

April, the same as March, is another enjoyable spring month in South San Francisco, California, with temperature in the range of an average high of 64.9°F (18.3°C) and an average low of 48.9°F (9.4°C). In South San Francisco, California, the average high-temperature is almost the same as in March - a still comfortable 64.9°F (18.3°C). Weather in April »

May, the last month of the spring, in South San Francisco, is an agreeable month, with average temperature fluctuating between 52°F (11.1°C) and 68°F (20°C). In South San Francisco, the average high-temperature is relatively the same as in April - an agreeable 68°F (20°C). Weather in May »

June, the first month of the summer, in South San Francisco, is still a pleasant month, with average temperature ranging between max 71.1°F (21.7°C) and min 54°F (12.2°C). In June, the average high-temperature is almost the same as in May - a still agreeable 71.1°F (21.7°C). Weather in June »

July, like June, is another pleasant summer month in South San Francisco, California, with temperature in the range of an average high of 72°F (22.2°C) and an average low of 55°F (12.8°C). In July, the average high-temperature is relatively the same as in June - a still agreeable 72°F (22.2°C). Weather in July »

The last month of the summer, August, is also an agreeable month in South San Francisco, California, with average temperature fluctuating between 73°F (22.8°C) and 55.9°F (13.3°C). In South San Francisco, California, the average high-temperature is relatively the same as in July - a still pleasant 73°F (22.8°C). Weather in August »

September, the first month of the autumn, in South San Francisco, is a warm month, with average temperature ranging between max 73.9°F (23.3°C) and min 55.9°F (13.3°C). The warmest month is September, with an average high-temperature of 73.9°F (23.3°C) and an average low-temperature of 55.9°F (13.3°C). Weather in September »

October, the same as September, in South San Francisco, California, is an agreeable autumn month, with average temperature varying between 53.1°F (11.7°C) and 70°F (21.1°C). In October, the average high-temperature is almost the same as in September - an agreeable 70°F (21.1°C). Weather in October »

November, the last month of the autumn, in South San Francisco, is also an enjoyable month, with average temperature ranging between min 48.9°F (9.4°C) and max 63°F (17.2°C). In November, the average high-temperature slightly decreases, from a pleasant 70°F (21.1°C) in October, to an enjoyable 63°F (17.2°C). Weather in November »

December, the first month of the winter, in South San Francisco, is still a mild month, with average temperature fluctuating between 57°F (13.9°C) and 45°F (7.2°C). In South San Francisco, the average high-temperature in December marginally drops, from a comfortable 63°F (17.2°C) in November, to a moderate 57°F (13.9°C). Weather in December »

What is the coldest month in South San Francisco?

January is the coldest month, with an average high-temperature of 55.9°F (13.3°C) and an average low-temperature of 44.1°F (6.7°C).

How much does it rain in South San Francisco?

Throughout the year, in South San Francisco, 20.6" (522.8mm) of rain is accumulated.

What is the wettest month in South San Francisco?

January is the month with the most rainfall, with 4.2" (105.9mm) of accumulated precipitation.

When are the longest days in South San Francisco?

The month with the longest days in South San Francisco, California, is June, with an average of 14.7h of daylight.

What is the driest month in South San Francisco?

The only month without rainfall in South San Francisco is July.

When does it rain in South San Francisco?

January through June, August through December are months with rainfall in South San Francisco, California.

What is the warmest month in South San Francisco?

September is the warmest month, with an average high-temperature of 73.9°F (23.3°C) and an average low-temperature of 55.9°F (13.3°C).

What is the month with the shortest days in South San Francisco?

The month with the shortest days in South San Francisco is December, with an average of 9.6h of daylight.
Average rainfall - South San Francisco, CA
Average daylight - South San Francisco, CA

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.6h).