S
M
T
W
T
F
S
30
90°
50°
31
86°
48°
1
68°
54°
2
59°
54°
3
61°
46°
4
70°
43°
5
75°
48°
6
75°
50°
7
82°
45°
8
88°
46°
9
95°
46°
10
86°
55°
11
90°
48°
12
81°
48°
13
75°
43°
14
82°
45°
15
86°
45°
16
79°
48°
17
73°
45°
18
84°
46°
19
88°
46°
20
90°
48°
21
91°
52°
22
86°
50°
23
86°
48°
24
86°
48°
25
77°
54°
26
79°
45°
27
77°
43°
28
82°
43°
29
86°
45°
30
91°
46°
1
91°
46°
2
91°
50°
3
93°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Etna
Etna's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Etna. See also: October | November | December.