S
M
T
W
T
F
S
26
89°
71°
27
89°
70°
28
88°
69°
29
86°
70°
30
87°
66°
31
82°
64°
1
82°
64°
2
83°
67°
3
83°
69°
4
84°
67°
5
84°
65°
6
85°
69°
7
88°
70°
8
87°
69°
9
86°
68°
10
85°
63°
11
84°
62°
12
83°
63°
13
84°
68°
14
88°
69°
15
87°
68°
16
89°
70°
17
90°
69°
18
89°
67°
19
88°
61°
20
82°
61°
21
81°
62°
22
81°
61°
23
82°
61°
24
81°
62°
25
82°
61°
26
83°
60°
27
83°
60°
28
82°
61°
29
83°
60°
30
80°
60°
31
83°
63°
1
86°
60°
2
85°
59°
3
79°
58°
4
80°
59°
5
80°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Belmont
Belmont's August 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 58° and 71°. The average high for August is 84° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Belmont. See also: September | October | November.