As of 21:53 PDT

Belmont, CA weather in September

62°

Belmont, Saturday, 8 August, 21:53

Mostly clear. Feels like 62°. High 85°, low 59°.

Pressure29.88 inHg

Wind4 mph NW

Humidity83%

Visibility6.2 mi

Dew point57°

See detailed hourly forecast

In September, Belmont, CA averages a high of 74.6° and a low of 57.7°. About 0.2 inches of precipitation fall over the month (1 wet days). The record high is 106.2° (2022) and the record low 48.4° (2019). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	76.1°	57.7°	2%	102.7° (2017)	52.9° (1970)
2	75.9°	58.5°	0%	104.5° (2017)	52.7° (1970)
3	75.6°	58.1°	0%	94.1° (2017)	53.2° (1970)
4	75.7°	57.9°	0%	92.5° (2022)	53.1° (1960)
5	76.6°	58.1°	0%	100.2° (2022)	53.2° (2010)
6	76.6°	58.5°	0%	106.2° (2022)	53.2° (1973)
7	77.2°	58.8°	0%	101.1° (2020)	52.2° (2018)
8	75.7°	58.3°	2%	96.8° (2022)	54° (1978)
9	74.1°	57.9°	7%	90.1° (1976)	52.9° (2018)
10	74.5°	57.6°	5%	92.1° (2017)	53.1° (1985)
11	75°	57.7°	2%	95.4° (1979)	53.2° (2018)
12	74.3°	57.9°	0%	94.5° (1979)	52.9° (1966)
13	73.8°	57.7°	0%	97.5° (1971)	51.8° (2005)
14	72.3°	57.4°	2%	101.8° (1971)	52.5° (2010)
15	71.8°	56.8°	0%	95.2° (1971)	52.5° (1970)
16	72.3°	56.8°	7%	90.3° (1968)	52.9° (2018)
17	73.2°	57.4°	3%	92.8° (1984)	53.1° (1972)
18	73.2°	57.9°	7%	93.2° (2000)	51.6° (1978)
19	73.9°	57.4°	8%	88.2° (1995)	50.9° (1986)
20	75°	57.4°	3%	90.9° (2015)	51.6° (1968)
21	74.7°	57.6°	7%	91.8° (2003)	52.2° (2012)
22	74.1°	57.2°	2%	88.9° (2003)	51.6° (2017)
23	74.8°	56.8°	5%	90.5° (2024)	51.1° (2018)
24	75.4°	57.9°	5%	94.1° (1978)	50.7° (2018)
25	75.2°	58.1°	7%	93.9° (2019)	51.8° (2017)
26	74.8°	57.9°	2%	91.4° (1963)	52° (2013)
27	74.5°	57.7°	5%	90.9° (2010)	51.6° (1971)
28	74.3°	57.7°	3%	97.7° (2020)	52.2° (1971)
29	74.1°	57.2°	3%	90° (1999)	48.4° (2019)
30	73.8°	57.6°	8%	91.8° (1980)	49.3° (2019)