As of 19:25 PDT

Sunnyvale, CA weather in December

73°

Sunnyvale, Saturday, 8 August, 19:25

Clear. Feels like 73°. High 85°, low 61°.

Pressure29.85 inHg

Wind6 mph NW

Humidity65%

Visibility6.2 mi

Dew point60°

See detailed hourly forecast

In December, Sunnyvale, CA averages a high of 57.1° and a low of 44.1°. About 3.2 inches of precipitation fall over the month (9 wet days). The record high is 72.3° (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	59.5°	46.4°	27%	70.5° (2021)	38.5° (1972)
2	59°	45.9°	27%	70.7° (1986)	32.9° (2022)
3	59.5°	45.9°	28%	72° (1979)	37.4° (1968)
4	59.2°	46.4°	25%	71.8° (1979)	35.2° (1971)
5	59°	46.6°	27%	68.9° (1962)	38.1° (1960)
6	58.8°	45.9°	27%	69.3° (1962)	31.1° (1960)
7	58.8°	45.3°	28%	71.2° (2006)	33.1° (1978)
8	58.3°	44.8°	18%	71.1° (1990)	32.7° (1972)
9	58.1°	45°	28%	71.8° (1990)	24.4° (1972)
10	57.9°	45°	22%	69.1° (1962)	30.7° (1972)
11	57°	43.7°	30%	67.6° (1962)	30.6° (1972)
12	57°	44.8°	30%	68.4° (1988)	35.6° (1967)
13	56.1°	44.6°	25%	64.4° (1988)	28° (1972)
14	56.3°	43.9°	28%	66.4° (1962)	28.2° (1967)
15	56.5°	42.6°	27%	67.1° (1991)	29.3° (1967)
16	57.9°	42.8°	17%	70.2° (1976)	34.3° (1971)
17	57.7°	43.7°	32%	72° (1979)	34° (1971)
18	56.3°	43.5°	25%	65.7° (1976)	35.8° (2000)
19	56.5°	43°	27%	67.5° (1985)	36.1° (1984)
20	55.9°	43.7°	33%	66.7° (1985)	30.7° (1968)
21	55.8°	43.2°	37%	66.7° (1985)	27.5° (1990)
22	55.8°	43.3°	40%	69.3° (2024)	25.7° (1990)
23	56.3°	42.8°	22%	70.5° (2024)	27.3° (1990)
24	56.7°	43°	27%	68° (2005)	29.1° (1990)
25	56.3°	41.9°	27%	67.3° (1980)	32.9° (1987)
26	56.1°	42.4°	32%	72.3° (1980)	32.7° (1990)
27	56.1°	43.7°	32%	67.8° (1980)	33.1° (1988)
28	55.4°	43.2°	30%	66.7° (1999)	34.2° (1969)
29	55.9°	43.2°	33%	65.7° (1999)	32.9° (1974)
30	55.2°	42.8°	33%	68.4° (1963)	35.1° (1990)
31	55.2°	43°	20%	68.5° (1980)	32.9° (1990)