As of 09:39 PDT

Fountain Valley, CA weather in December

78°

Fountain Valley, Sunday, 9 August, 09:39

Mostly clear. Feels like 79°. High 95°, low 72°.

Pressure29.88 inHg

Wind4 mph W

Humidity77%

Visibility6.2 mi

Dew point70°

See detailed hourly forecast

In December, Fountain Valley, CA averages a high of 63.2° and a low of 46.8°. About 2.0 inches of precipitation fall over the month (5 wet days). The record high is 85.1° (2017) and the record low 31.3° (1990). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	65.5°	48°	7%	79° (1976)	37.4° (2004)
2	65.5°	48°	8%	78.3° (1969)	39.6° (2004)
3	65.5°	48.7°	10%	76.5° (2020)	39.7° (1973)
4	64.9°	48.2°	10%	77.9° (1979)	39.2° (2011)
5	64.8°	48°	12%	83.5° (1979)	40.1° (1983)
6	64.8°	48.7°	15%	77.7° (1990)	40.5° (2011)
7	64.6°	48.9°	23%	78.3° (2017)	36.5° (1978)
8	64.8°	47.8°	13%	79.3° (2020)	35.2° (1978)
9	64.4°	47.7°	13%	84.7° (2017)	34.9° (1978)
10	64.6°	47.5°	7%	85.1° (2017)	39° (1998)
11	63.7°	48.4°	15%	77.7° (2017)	38.5° (2013)
12	63°	46.9°	12%	79.3° (2017)	34.5° (1972)
13	62.4°	46.6°	13%	72.3° (2017)	36° (1985)
14	62.8°	45.9°	12%	74.7° (2023)	34.7° (1972)
15	63.5°	46°	10%	79.2° (2023)	37.2° (1975)
16	64°	46.4°	20%	77.4° (1998)	37.9° (1975)
17	63.3°	46.6°	20%	75° (1998)	37.6° (1971)
18	62.8°	47.1°	20%	75° (2024)	37.8° (1968)
19	62.4°	46.4°	22%	73.2° (2004)	38.8° (2006)
20	62.1°	45.9°	17%	77.4° (1960)	36.7° (1978)
21	61.5°	46.2°	18%	73.8° (1960)	34.5° (1968)
22	61.9°	46.4°	18%	75.9° (1960)	33.4° (1990)
23	62.8°	46.2°	15%	75.6° (1989)	31.3° (1990)
24	63°	45.5°	18%	75.4° (1989)	32° (1998)
25	63.3°	45.9°	20%	76.6° (2013)	33.4° (1974)
26	61.9°	45.3°	17%	76.6° (2022)	34.2° (1987)
27	61.2°	45.3°	15%	75.2° (2013)	35.8° (1988)
28	61°	45.7°	22%	76.8° (1963)	36.1° (1987)
29	61.3°	45.9°	23%	78.6° (1963)	36° (1988)
30	61.3°	45.7°	18%	79.7° (1980)	34° (1982)
31	61.5°	46°	20%	74.5° (1963)	35.1° (1990)