As of 19:21 PDT

Cupertino, CA weather in December

74°

Cupertino, Saturday, 8 August, 19:21

Clear. Feels like 73°. High 84°, low 60°.

Pressure29.85 inHg

Wind4.3 mph NW

Humidity61%

Visibility6.2 mi

Dew point59°

See detailed hourly forecast

In December, Cupertino, CA averages a high of 57.3° and a low of 43.4°. About 4.3 inches of precipitation fall over the month (9 wet days). The record high is 73° (1980) and the record low 24.4° (1972). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	59.7°	45.5°	30%	70.5° (2013)	37.2° (1972)
2	59.2°	45.1°	27%	71.4° (1986)	32.9° (2022)
3	59.7°	45°	28%	71.1° (1979)	36.3° (1968)
4	59.4°	45.5°	27%	71.8° (1979)	34.2° (1971)
5	59.4°	45.9°	23%	71.2° (1962)	35.4° (1972)
6	59°	45.1°	23%	70.7° (1962)	31.3° (1960)
7	59°	44.6°	28%	72.7° (1975)	31.3° (1978)
8	58.3°	44.2°	22%	71.8° (1990)	32.5° (1971)
9	58.3°	44.2°	32%	72.3° (1990)	24.4° (1972)
10	58.3°	44.2°	27%	70.5° (1962)	30° (1972)
11	57.4°	43.2°	28%	67.6° (2004)	29.7° (1972)
12	57.2°	44.2°	28%	69.4° (1988)	34.7° (1967)
13	56.3°	44.2°	27%	65.5° (1988)	27.3° (1972)
14	56.5°	43.2°	27%	66.6° (1979)	27.3° (1967)
15	56.8°	42.1°	27%	68.2° (1991)	28.9° (1967)
16	58.3°	41.9°	18%	71.2° (1976)	33.4° (1971)
17	57.9°	43°	33%	72° (1979)	32.9° (2008)
18	56.5°	42.8°	27%	66.7° (1985)	34.7° (1975)
19	56.7°	42.4°	28%	68.4° (1985)	34.7° (1965)
20	56.1°	43.2°	30%	67.6° (1985)	29.3° (1968)
21	55.8°	42.6°	38%	68° (1985)	25.9° (1990)
22	55.9°	42.6°	38%	69.3° (2024)	25° (1990)
23	56.7°	41.9°	20%	70.5° (2024)	27° (1990)
24	57°	42.1°	25%	69.6° (2013)	28.4° (1990)
25	56.8°	41.4°	27%	69.8° (2013)	32.2° (1987)
26	56.3°	41.7°	33%	73° (1980)	32.4° (1990)
27	56.3°	43.2°	32%	68.7° (2013)	32.4° (1988)
28	55.6°	42.4°	35%	67.5° (1999)	32.5° (1969)
29	56.1°	42.4°	35%	67.5° (2013)	32° (1974)
30	55.4°	42.3°	33%	70° (1963)	34.5° (2010)
31	55.6°	42.4°	22%	69.8° (1980)	31.6° (2014)