As of 03:44 PDT

Tustin, CA weather in December

71°

Tustin, Sunday, 9 August, 03:44

Clear. Feels like 71°. High 97°, low 71°.

Pressure29.85 inHg

Wind1 mph SE

Humidity85%

Visibility6.2 mi

Dew point65°

See detailed hourly forecast

In December, Tustin, CA averages a high of 64.5° and a low of 47.1°. About 2.2 inches of precipitation fall over the month (5 wet days). The record high is 85.3° (2017) and the record low 31.6° (1990). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	66.9°	48.2°	8%	80.1° (1976)	38.1° (2004)
2	66.9°	48.4°	8%	79.2° (1969)	39.7° (2004)
3	66.9°	49.3°	12%	77.7° (1989)	41° (1973)
4	66.4°	48.4°	17%	81° (1979)	39.2° (2011)
5	66.4°	48.2°	12%	85.1° (1979)	39.9° (1983)
6	66.4°	49.1°	15%	80.8° (1979)	40.5° (2011)
7	66°	49.3°	27%	78.3° (2017)	35.2° (1978)
8	66°	48.4°	17%	81° (2017)	33.8° (1978)
9	65.7°	47.5°	15%	85.3° (2017)	35.1° (1978)
10	65.8°	47.5°	8%	84.4° (2017)	39.4° (1985)
11	64.9°	48.4°	17%	82.2° (2017)	39.6° (1972)
12	64°	47.1°	12%	81.7° (2017)	35.4° (1972)
13	63.7°	46.8°	15%	75.6° (2017)	36.1° (1985)
14	64.2°	45.9°	12%	78.1° (2017)	35.2° (1967)
15	64.6°	46°	8%	80.8° (2023)	37.6° (1975)
16	65.3°	46.8°	23%	79.7° (2013)	38.8° (1971)
17	64.8°	46.9°	20%	77.9° (1998)	38.8° (1975)
18	64.2°	47.5°	18%	79° (2024)	38.5° (1968)
19	63.9°	46.6°	23%	75.6° (1960)	39° (1992)
20	63.5°	46°	17%	78.4° (1960)	36.5° (1992)
21	62.8°	46.6°	20%	78.3° (2020)	33.4° (1968)
22	63°	46.6°	20%	77.9° (1960)	35.2° (1990)
23	64°	46.6°	17%	78.8° (1989)	31.6° (1990)
24	64.4°	45.9°	13%	79° (1989)	34° (1998)
25	64.6°	46.4°	20%	78.8° (2013)	33.3° (1990)
26	63.1°	45.7°	17%	81.5° (2022)	33.1° (1987)
27	62.4°	45.5°	15%	78.8° (2013)	35.4° (1987)
28	62.1°	45.9°	22%	78.4° (1963)	35.2° (1987)
29	62.4°	46°	23%	79.5° (1963)	35.8° (1988)
30	62.6°	45.7°	22%	81.7° (1980)	32.7° (1982)
31	62.6°	45.9°	20%	76.8° (1963)	36.9° (1987)