As of 23:25 PDT

Belmont, CA weather in December

60°

Belmont, Saturday, 8 August, 23:25

Mostly clear. Feels like 60°. High 85°, low 59°.

Pressure29.88 inHg

Wind2 mph NW

Humidity86%

Visibility6.2 mi

Dew point56°

See detailed hourly forecast

In December, Belmont, CA averages a high of 56.2° and a low of 45.5°. About 3.6 inches of precipitation fall over the month (9 wet days). The record high is 69.4° (1979) 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	58.3°	47.7°	27%	66.2° (1986)	41.9° (1972)
2	58.1°	47.3°	25%	68.5° (1986)	38.3° (2022)
3	58.5°	47.5°	27%	69.4° (1979)	40.3° (2004)
4	57.7°	47.5°	28%	67.1° (1979)	39.7° (1971)
5	57.7°	47.7°	25%	66° (1962)	37.8° (1972)
6	57.7°	47.1°	30%	66.9° (1962)	38.7° (1978)
7	57.7°	46.6°	30%	68.7° (1975)	35.2° (1978)
8	57.2°	46.8°	20%	68° (1990)	33.6° (1972)
9	57.4°	46.6°	30%	68° (1990)	27.7° (1972)
10	56.8°	46.4°	25%	65.8° (1962)	30.7° (1972)
11	56.3°	45.5°	28%	65.1° (1988)	31.6° (1972)
12	55.9°	46.4°	28%	65.3° (1988)	37.8° (1972)
13	55.6°	45.9°	27%	63.1° (1962)	28.4° (1972)
14	55.8°	45.5°	27%	64.9° (1962)	32.7° (1967)
15	55.8°	44.6°	28%	65.7° (1976)	34.3° (1967)
16	57°	44.4°	18%	67.5° (1976)	37.4° (1971)
17	56.7°	44.8°	37%	67.6° (1979)	37.2° (1971)
18	55.6°	45°	28%	63.3° (1985)	37.6° (1971)
19	55.9°	44.6°	27%	66.7° (1999)	37.2° (2021)
20	55°	45°	32%	65.7° (1999)	35.1° (1968)
21	55°	44.6°	40%	65.5° (1999)	28.8° (1990)
22	55°	44.6°	37%	65.5° (1999)	27.1° (1990)
23	55.6°	44.2°	23%	64.9° (2024)	30.2° (1990)
24	55.8°	44.4°	27%	66.2° (2013)	31.6° (1990)
25	55.8°	43.9°	27%	65.7° (1980)	37.6° (1990)
26	55.2°	43.7°	33%	68.4° (1980)	35.1° (1990)
27	55.2°	45°	30%	65.3° (1967)	38.1° (1988)
28	54.7°	44.1°	28%	64.9° (1975)	37.4° (1988)
29	55.2°	44.6°	33%	65.3° (2013)	35.4° (1990)
30	54.7°	44.4°	28%	65.5° (1963)	36.1° (2020)
31	54.7°	44.4°	23%	64.4° (1980)	34.5° (1990)