As of 08:28 PDT

San Bruno, CA weather in December

59°

San Bruno, Sunday, 9 August, 08:28

Mostly clear. Feels like 59°. High 85°, low 59°.

Pressure29.85 inHg

Wind3 mph W

Humidity88%

Visibility6.2 mi

Dew point56°

See detailed hourly forecast

In December, San Bruno, CA averages a high of 55.2° and a low of 44.7°. About 3.7 inches of precipitation fall over the month (9 wet days). The record high is 68° (2020) and the record low 27.1° (1990). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	57.2°	46.8°	25%	66.7° (2021)	40.6° (1971)
2	57°	46.2°	25%	65.8° (1986)	38.1° (2022)
3	57.4°	46.8°	28%	67.1° (1979)	37.6° (2004)
4	56.7°	46.2°	28%	64.4° (1979)	37.9° (1968)
5	56.7°	46.6°	23%	63.5° (1962)	35.4° (1972)
6	56.7°	46.4°	28%	64.4° (1962)	36.9° (2013)
7	56.7°	46°	32%	68° (2020)	37° (1978)
8	56.1°	45.5°	20%	66.4° (2020)	32.5° (2013)
9	56.1°	45.3°	30%	64.8° (1990)	28° (1972)
10	55.8°	45.5°	25%	63.1° (1962)	31.1° (1972)
11	55°	44.6°	28%	63° (1988)	29.8° (1972)
12	54.9°	45.3°	28%	62.8° (1988)	34° (1972)
13	54.7°	44.8°	27%	61.3° (1962)	29.1° (1972)
14	54.7°	44.6°	28%	63.1° (1962)	31.8° (1972)
15	54.9°	44.2°	30%	63.7° (1976)	34.5° (1972)
16	55.8°	43.7°	18%	64.4° (1976)	34.5° (1971)
17	55.4°	44.2°	37%	64.2° (1998)	35.1° (1965)
18	54.5°	44.2°	28%	62.1° (2023)	34° (1965)
19	54.7°	44.1°	28%	66.2° (1999)	36° (2016)
20	54°	44.1°	32%	64.4° (1999)	34.3° (1965)
21	54.1°	44.1°	40%	64° (1999)	29.3° (1990)
22	54°	44.2°	35%	63.5° (1999)	27.1° (1990)
23	54.7°	43.7°	25%	65.3° (2024)	27.5° (1990)
24	54.7°	43.9°	27%	63.9° (2013)	30.9° (1998)
25	54.7°	43.3°	27%	63.5° (1967)	33.8° (1998)
26	54°	43.5°	33%	64.9° (1980)	32.2° (1990)
27	54.1°	43.9°	30%	64° (1967)	36.1° (1990)
28	53.8°	43.7°	32%	63.3° (1975)	36.9° (1988)
29	54.3°	44.1°	33%	63.5° (2013)	35.4° (1990)
30	53.6°	43.9°	28%	62.2° (1963)	34° (1990)
31	53.8°	43.7°	25%	61.2° (1980)	31.5° (1990)