As of 15:18 PDT

South San Francisco, CA weather in May

70°

South San Francisco, Sunday, 9 August, 15:18

Partly cloudy. Feels like 70°. High 78°, low 60°.

Pressure29.83 inHg

Wind6 mph W

Humidity70%

Visibility6.2 mi

Dew point63°

See detailed hourly forecast

In May, South San Francisco, CA averages a high of 64.5° and a low of 51.8°. About 0.5 inches of precipitation fall over the month (3 wet days). The record high is 91.2° (2008) and the record low 42.4° (1964). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	64°	50.7°	13%	77.9° (2014)	45.9° (1988)
2	64.2°	51.1°	12%	82° (2013)	45.9° (1964)
3	63.1°	51.4°	13%	75° (2013)	46.4° (2022)
4	62.8°	50.9°	12%	79.3° (1990)	42.4° (1964)
5	63.1°	50.9°	13%	80.6° (1987)	45.7° (1975)
6	63.5°	50.9°	13%	78.1° (1987)	44.2° (1964)
7	64°	51.1°	12%	81.7° (1987)	45.9° (1977)
8	63.9°	51.1°	10%	76.3° (2001)	46.4° (1999)
9	63.1°	50.9°	10%	81.9° (1993)	46.6° (1983)
10	63.3°	50.7°	5%	76.1° (2001)	45.7° (2022)
11	64°	50.9°	5%	77.7° (1996)	45.1° (2022)
12	64.6°	51.1°	10%	87.1° (1976)	46.4° (1961)
13	64.6°	51.3°	7%	80.4° (2014)	46.8° (1999)
14	64.4°	52°	3%	81° (2014)	46° (1968)
15	64.9°	52.2°	8%	91.2° (2008)	45.3° (1964)
16	64.6°	52°	5%	85.5° (1997)	46.8° (1999)
17	64.8°	52°	12%	88.7° (1997)	46.6° (1974)
18	64.6°	52°	13%	80.4° (1997)	45.9° (1974)
19	64.9°	52.2°	10%	79.5° (1983)	46.4° (1991)
20	64.6°	52°	7%	81.7° (1988)	47.5° (2024)
21	64.8°	52°	7%	80.1° (2001)	47.5° (2021)
22	65.1°	51.8°	3%	77° (2000)	46.8° (1960)
23	64.6°	52.3°	5%	78.4° (1982)	46.4° (2010)
24	64.9°	52.3°	2%	86.4° (1982)	47.1° (1977)
25	64.8°	52.5°	10%	79.7° (1975)	47.8° (1980)
26	64°	52.5°	5%	79.7° (1974)	47.8° (2024)
27	64.4°	52.7°	8%	86.2° (1984)	48.7° (1964)
28	65.1°	52.7°	8%	86.4° (1975)	48.6° (2010)
29	66°	52.7°	2%	88.5° (1975)	47.7° (2011)
30	66.6°	52.9°	2%	87.1° (2001)	48.7° (1971)
31	66.7°	53.2°	5%	83.1° (1970)	48° (1971)