Best year time to visit City of South San Francisco

General weather information about City of South San Francisco

Average annual temperature is 13.0 °C

Absolute maximum temperature: 33.1 °C

Absolute minimum temperature: 2.5 °C

Number of sunny days: 248 days

Number of rainy days: 117 days

Look at detailed online map of City of South San Francisco

* Weather data for City of South San Francisco United States is based on climate observations for 2026 year

City of South San Francisco air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	17.2	15.9	17.8	21.7	20.6	20.5	25.4	26.6	22.8	33.1	24.1	17.7
Average daytime temperature (°C)	13.5	12.4	12.2	14.2	15.7	17.7	19.8	21.0	20.3	22.1	17.7	15.0
Average temperature (°C)	10.3	8.5	9.4	10.8	12.7	14.1	15.3	16.8	16.5	16.5	13.4	11.7
Average night temperature (°C)	7.8	5.5	7.2	8.2	10.5	11.8	12.3	14.0	13.9	12.9	10.4	9.3
Absolute minimum temperature (°C)	2.5	2.6	4.0	4.9	8.3	10.4	11.2	12.5	12.4	8.1	6.3	5.3

City of South San Francisco monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	10.0	11.0	12.0	13.0	14.0	14.0	14.0	14.0	13.0	11.0	10.0	9.0
Daylight mean duration (h)	9.9	10.8	12.0	13.2	14.2	14.7	14.5	13.6	12.4	11.2	10.2	9.6
Daylight minimum duration (h)	9.0	10.0	11.0	12.0	13.0	14.0	14.0	13.0	11.0	10.0	9.0	9.0
Sunshine mean duration (h)	6.2	7.8	8.2	11.2	10.8	12.0	12.3	11.3	10.6	9.4	7.9	5.8
Precipitation (mm)	254	85	229	11	40	0	0	0	3	6	107	173
Sunny days	12	14	8	24	20	27	31	29	24	25	20	14
Rainy days	19	14	23	6	11	3	0	2	6	6	10	17
Snow days	0	0	0	0	0	0	0	0	0	0	0	0

City of South San Francisco - weather forecast by months

Best time to visit City of South San Francisco:

The best time to visit City of South San Francisco during the most sunny months:

June — 12.0(h)
July — 12.3(h)

The largest precipitation sum in City of South San Francisco is at

January — 254(mm)

March — 229(mm)

November — 107(mm)

December — 173(mm)

Weather forecast in the closest to City of South San Francisco admin centers

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Frequently asked questions

When is the best time to visit City of South San Francisco?

The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit City of South San Francisco.

What is the weather like in City of South San Francisco?

See average temperature, rainfall and daylight hours for City of South San Francisco by month in the table above.

How many sunny days does City of South San Francisco have?

The monthly weather statistics above show sunshine and rainfall patterns for City of South San Francisco throughout the year.