As of 10:44 PDT

San Bernardino, CA weather in December

95°

San Bernardino, Sunday, 9 August, 10:44

Mostly clear. Feels like 93°. High 99°, low 69°.

Pressure29.88 inHg

Wind2 mph NE

Humidity27%

Visibility6.2 mi

Dew point56°

See detailed hourly forecast

In December, San Bernardino, CA averages a high of 61.3° and a low of 40.3°. About 1.9 inches of precipitation fall over the month (5 wet days). The record high is 83.7° (2021) and the record low 20.5° (1967). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	64.4°	42.1°	13%	83.7° (2021)	28.9° (2004)
2	64.4°	41.7°	12%	79° (2017)	30.4° (2004)
3	64.6°	42.3°	8%	76.5° (1977)	31.1° (2004)
4	63.9°	41.7°	13%	81° (1979)	30.6° (2011)
5	64.2°	42.3°	17%	79.5° (1977)	31.8° (1983)
6	64°	43°	17%	79.3° (1979)	29.8° (2011)
7	62.8°	43.2°	22%	77.5° (2006)	28.2° (1978)
8	63.1°	41.4°	15%	80.4° (2015)	25.5° (1978)
9	63.1°	41.2°	12%	78.1° (2025)	26.6° (1972)
10	63°	41.2°	8%	81.1° (2025)	29.7° (2013)
11	61.9°	41.5°	18%	81.9° (2025)	29.1° (1972)
12	61°	40.3°	13%	78.3° (1988)	25.2° (1972)
13	61°	39.7°	17%	80.8° (2017)	27.1° (1985)
14	61.3°	39.6°	13%	79° (2017)	25.9° (1967)
15	61.2°	39.6°	12%	77.4° (2025)	27.3° (2001)
16	61.7°	39.9°	20%	78.1° (2013)	29.3° (1971)
17	61.2°	40.3°	18%	80.1° (2013)	28.2° (1967)
18	60.4°	40.1°	18%	79° (2025)	28.6° (1965)
19	60.3°	39.4°	20%	80.1° (2024)	27.9° (2012)
20	60.3°	39.4°	15%	76.8° (2024)	22.3° (1970)
21	60.1°	39.4°	20%	79.3° (2005)	20.5° (1967)
22	59.2°	40.1°	18%	76.5° (2025)	23.9° (1967)
23	60.1°	39.2°	22%	75.9° (2005)	23.4° (1990)
24	60.4°	39°	18%	78.3° (2005)	25.7° (1990)
25	60.4°	38.8°	22%	76.5° (1980)	25.3° (1970)
26	59.5°	38.8°	22%	80.1° (1980)	28.4° (1974)
27	59.2°	38.7°	15%	77.5° (2017)	28.2° (2015)
28	58.1°	38.8°	20%	81° (2017)	28° (1962)
29	58.8°	39.2°	25%	82.4° (2017)	24.1° (1971)
30	59.2°	38.1°	17%	76.5° (1980)	22.6° (1971)
31	58.8°	39°	18%	78.1° (2011)	26.1° (1971)