S
M
T
W
T
F
S
26
86°
67°
27
86°
67°
28
85°
68°
29
86°
68°
30
87°
67°
31
86°
66°
1
80°
65°
2
79°
63°
3
79°
64°
4
78°
66°
5
79°
66°
6
82°
65°
7
83°
65°
8
85°
66°
9
85°
66°
10
84°
65°
11
85°
66°
12
84°
65°
13
85°
66°
14
88°
65°
15
88°
64°
16
82°
65°
17
81°
63°
18
81°
65°
19
85°
59°
20
82°
57°
21
78°
56°
22
78°
56°
23
79°
58°
24
79°
56°
25
78°
57°
26
79°
60°
27
79°
57°
28
82°
57°
29
77°
56°
30
77°
56°
31
76°
55°
1
76°
56°
2
77°
56°
3
77°
57°
4
78°
55°
5
78°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Belle Vernon
Belle Vernon's August 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 55° and 68°. The average high for August is 81° with an average low of 62°. 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 Belle Vernon. See also: September | October | November.