As of 21:53 PDT

La Mesa, CA weather in December

74°

La Mesa, Saturday, 8 August, 21:53

Clear. Feels like 74°. High 96°, low 69°.

Pressure29.88 inHg

Wind5 mph S

Humidity74%

Visibility6.2 mi

Dew point64°

See detailed hourly forecast

In December, La Mesa, CA averages a high of 63.6° and a low of 46.2°. About 1.9 inches of precipitation fall over the month (6 wet days). The record high is 85.3° (2025) and the record low 30.2° (1990). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	66°	47.5°	15%	78.4° (1977)	37° (2004)
2	66.2°	47.3°	7%	79.5° (2020)	38.5° (2004)
3	66°	48.4°	13%	76.1° (1977)	40.3° (2004)
4	65.5°	48°	18%	81° (1979)	38.7° (2011)
5	65.5°	47.5°	17%	79° (1979)	39.4° (2011)
6	65.7°	48°	13%	81.3° (1979)	38.7° (2011)
7	65.1°	47.8°	22%	79.9° (2024)	30.9° (1978)
8	65.1°	47.7°	18%	80.4° (2017)	34.7° (1978)
9	65.3°	46.9°	15%	83.3° (2025)	32.5° (1960)
10	64.9°	46.6°	15%	85.3° (2025)	38.5° (1985)
11	64°	47.1°	18%	79.7° (2017)	37.4° (1972)
12	63°	46.6°	15%	82° (2010)	34.2° (1972)
13	63.1°	45.7°	17%	79.7° (2010)	36.5° (1985)
14	63°	45.1°	15%	74.5° (2017)	32.9° (1967)
15	63.9°	45.3°	8%	81.3° (2017)	35.6° (1967)
16	64.6°	46°	23%	79.5° (2013)	37.8° (1971)
17	63.7°	46.2°	18%	77.2° (2013)	38.1° (1984)
18	63.1°	46.2°	20%	78.6° (2024)	37.4° (1968)
19	63°	45.7°	20%	77° (2005)	37.2° (1992)
20	63°	45.7°	20%	76.6° (2020)	34.7° (1978)
21	62.1°	45.7°	20%	79.5° (2005)	31.3° (1968)
22	61.7°	45.7°	22%	74.1° (1960)	35.4° (1968)
23	62.8°	45.5°	23%	77° (1989)	30.2° (1990)
24	63.3°	45.1°	13%	77° (1989)	34.7° (1998)
25	63.5°	45.5°	18%	81.9° (2022)	32.2° (1987)
26	62.1°	45°	27%	81.1° (2022)	34.2° (1987)
27	61.7°	44.6°	13%	77° (2013)	34.5° (1987)
28	61.3°	45.1°	22%	79.5° (2017)	35.1° (1987)
29	61.3°	45.3°	27%	77.7° (1963)	34.7° (1988)
30	61.9°	45°	22%	79.5° (1980)	35.2° (1988)
31	61.5°	45°	20%	77.2° (1963)	35.6° (1982)