As of 05:37 PDT

San Bernardino, CA weather in September

77°

San Bernardino, Sunday, 9 August, 05:37

Clear. Feels like 76°. High 100°, low 72°.

Pressure29.88 inHg

Wind0.9 mph E

Humidity39%

Visibility6.2 mi

Dew point50°

See detailed hourly forecast

In September, San Bernardino, CA averages a high of 88.1° and a low of 62.9°. About 0.4 inches of precipitation fall over the month (2 wet days). The record high is 115.2° (2020) and the record low 46.6° (1965). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	92.3°	66°	10%	107.4° (2017)	54° (1964)
2	92.5°	66.2°	15%	105.4° (2007)	50.2° (1964)
3	91.9°	66.7°	10%	110.3° (2022)	54.9° (1999)
4	92.3°	66.9°	8%	108.7° (2022)	54.1° (1985)
5	92.3°	67.1°	7%	113.2° (2020)	56.5° (2016)
6	92.5°	66.6°	8%	115.2° (2020)	54.5° (2000)
7	91.8°	66.9°	7%	109° (2024)	52° (1965)
8	90.9°	66.2°	8%	106° (2024)	48° (1965)
9	89.4°	65.5°	7%	107.1° (2024)	51.6° (1965)
10	88.2°	64.8°	12%	103.5° (1993)	52.5° (2010)
11	88.2°	63.7°	5%	102.9° (1971)	49.6° (1985)
12	87.8°	63°	3%	105.8° (1971)	48.6° (1985)
13	86.9°	62.6°	3%	106.5° (1971)	51.1° (1972)
14	87.3°	62.1°	0%	102.4° (2014)	51.6° (1970)
15	87.1°	61.9°	3%	102.9° (2014)	51.6° (1970)
16	86.4°	62.2°	2%	104.2° (2000)	52.7° (1986)
17	86.2°	62.1°	3%	100.9° (2000)	52° (1977)
18	85.8°	61.5°	8%	101.3° (2020)	48.4° (1993)
19	84.9°	60.4°	5%	97.9° (2016)	48.7° (1978)
20	84.6°	60.6°	8%	100.8° (2015)	46.6° (1965)
21	85.5°	59.4°	5%	99.9° (2021)	48.4° (1965)
22	86.2°	60.1°	7%	99.7° (2002)	50.4° (1988)
23	87.4°	60.3°	5%	101.8° (2002)	50.4° (1986)
24	87.4°	60.8°	5%	100.9° (2015)	50.2° (1986)
25	86.7°	61.3°	8%	102.4° (2010)	49.8° (2005)
26	85.8°	60.8°	7%	103.8° (2010)	48.9° (1971)
27	86.2°	60.3°	5%	105.8° (2010)	47.5° (1986)
28	86°	60.6°	5%	101.5° (2020)	47.1° (1971)
29	85.3°	60.6°	10%	102.7° (2020)	46.6° (1986)
30	86°	59.7°	7%	104.2° (2020)	47.5° (1982)