S
M
T
W
T
F
S
30
81°
59°
31
79°
54°
1
76°
54°
2
74°
55°
3
74°
54°
4
75°
54°
5
74°
53°
6
73°
53°
7
73°
54°
8
74°
58°
9
73°
53°
10
72°
53°
11
72°
54°
12
74°
53°
13
73°
52°
14
72°
53°
15
70°
55°
16
72°
50°
17
71°
49°
18
71°
50°
19
74°
51°
20
Hist. Avg.
74°
54°
21
Hist. Avg.
74°
54°
22
Hist. Avg.
73°
53°
23
Hist. Avg.
73°
53°
24
Hist. Avg.
73°
52°
25
Hist. Avg.
72°
52°
26
Hist. Avg.
72°
52°
27
Hist. Avg.
71°
51°
28
Hist. Avg.
71°
51°
29
Hist. Avg.
71°
50°
30
Hist. Avg.
70°
50°
1
Hist. Avg.
70°
50°
2
Hist. Avg.
69°
49°
3
Hist. Avg.
69°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Mount Aetna
Mount Aetna's September 2026 forecast shows daily high temperatures ranging from 70° to 81°, with overnight lows between 49° and 59°. The average high for September is 74° with an average low of 53°. 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 Mount Aetna. See also: October | November | December.
