S
M
T
W
T
F
S
30
76°
55°
31
80°
58°
1
82°
53°
2
75°
54°
3
76°
57°
4
80°
61°
5
81°
62°
6
81°
60°
7
77°
59°
8
75°
55°
9
80°
60°
10
80°
59°
11
74°
60°
12
79°
60°
13
78°
56°
14
73°
50°
15
71°
51°
16
72°
50°
17
72°
55°
18
76°
56°
19
78°
57°
20
79°
58°
21
71°
51°
22
76°
55°
23
71°
56°
24
77°
50°
25
72°
47°
26
68°
46°
27
Hist. Avg.
71°
52°
28
Hist. Avg.
71°
51°
29
Hist. Avg.
70°
51°
30
Hist. Avg.
70°
51°
1
Hist. Avg.
70°
50°
2
Hist. Avg.
69°
50°
3
Hist. Avg.
69°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Belmont
Belmont's September 2026 forecast shows daily high temperatures ranging from 68° to 82°, with overnight lows between 46° and 62°. The average high for September is 76° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Belmont. See also: October | November | December.
