S
M
T
W
T
F
S
26
80°
64°
27
81°
62°
28
81°
60°
29
80°
65°
30
82°
66°
31
86°
64°
1
83°
59°
2
81°
59°
3
80°
62°
4
80°
59°
5
81°
59°
6
80°
60°
7
80°
59°
8
81°
61°
9
79°
65°
10
80°
66°
11
79°
66°
12
80°
64°
13
82°
65°
14
85°
59°
15
81°
58°
16
79°
61°
17
81°
61°
18
83°
57°
19
79°
58°
20
77°
57°
21
78°
61°
22
78°
58°
23
77°
63°
24
77°
63°
25
78°
61°
26
81°
64°
27
82°
64°
28
82°
63°
29
83°
63°
30
83°
56°
31
76°
56°
1
76°
57°
2
75°
56°
3
76°
61°
4
75°
55°
5
79°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mount Aetna
Mount Aetna's August 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 54° and 66°. The average high for August is 80° with an average low of 61°. 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 Mount Aetna. See also: September | October | November.