As of 09:21 EDT

Belmont, MA weather in September

81°

Belmont, Sunday, 9 August, 09:21

Clear. Feels like 85°. High 92°, low 69°.

Pressure29.91 inHg

Wind6 mph SE

Humidity73%

Visibility6.2 mi

Dew point71°

See detailed hourly forecast

In September, Belmont, MA averages a high of 72° and a low of 56.8°. About 3.4 inches of precipitation fall over the month (8 wet days). The record high is 94.5° (2007) and the record low 38.3° (2000). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	76.3°	60.6°	23%	92.8° (2010)	49.6° (1975)
2	75.7°	59.9°	25%	93.6° (2010)	48.4° (2017)
3	75.9°	60.4°	32%	92.8° (2018)	49.6° (1967)
4	76.5°	60.4°	23%	90.1° (1973)	50° (1987)
5	76.1°	60.1°	17%	92.8° (2018)	49.6° (1994)
6	75°	59.5°	32%	93.9° (2018)	49.8° (2000)
7	75.6°	59.4°	25%	93.4° (2023)	47.3° (1962)
8	74.5°	59.2°	20%	94.5° (2007)	48.7° (1984)
9	74.3°	58.8°	25%	92.5° (2015)	49.1° (1986)
10	73.4°	59°	28%	90.3° (1989)	47.3° (1978)
11	73.9°	58.1°	28%	94.3° (2013)	48.6° (1995)
12	73.4°	57.6°	25%	90.1° (1961)	47.1° (1985)
13	73.4°	57.6°	35%	83.8° (2001)	45.1° (1985)
14	73.2°	58.1°	43%	86.9° (2016)	46.6° (1963)
15	71.1°	56.8°	37%	85.6° (1993)	44.2° (1975)
16	70.9°	55.6°	28%	84.6° (1991)	43.7° (1964)
17	71.4°	55.4°	27%	86.5° (1991)	44.6° (1986)
18	70.5°	56.3°	28%	84.9° (2015)	44.4° (1990)
19	70°	55°	32%	87.8° (1983)	43.3° (2019)
20	70.7°	54.7°	32%	90.7° (1983)	42.1° (2020)
21	70.7°	55.6°	23%	86.9° (1965)	41.4° (2020)
22	71.1°	55.8°	33%	88.2° (1965)	42.1° (2020)
23	69.6°	55°	35%	90.5° (2019)	42.8° (1963)
24	67.3°	53.8°	23%	86.2° (2017)	39° (1963)
25	68.2°	53.1°	18%	86.9° (2007)	41.2° (1963)
26	68.7°	54.3°	42%	90° (2007)	43.5° (1967)
27	70°	54.1°	30%	86.4° (2017)	42.1° (1966)
28	68.9°	54.5°	23%	85.5° (2014)	41° (1989)
29	66.9°	53.2°	28%	81.1° (2020)	38.3° (2000)
30	65.7°	51.3°	27%	82.9° (1986)	39° (1991)