S
M
T
W
T
F
S
30
89°
58°
31
87°
56°
1
87°
57°
2
88°
58°
3
91°
59°
4
91°
61°
5
92°
61°
6
92°
60°
7
91°
62°
8
92°
61°
9
91°
60°
10
84°
60°
11
83°
61°
12
89°
61°
13
90°
62°
14
91°
61°
15
90°
60°
16
88°
59°
17
86°
60°
18
88°
60°
19
88°
59°
20
Hist. Avg.
84°
60°
21
Hist. Avg.
84°
60°
22
Hist. Avg.
84°
60°
23
Hist. Avg.
84°
60°
24
Hist. Avg.
83°
60°
25
Hist. Avg.
83°
59°
26
Hist. Avg.
82°
59°
27
Hist. Avg.
82°
59°
28
Hist. Avg.
82°
58°
29
Hist. Avg.
82°
58°
30
Hist. Avg.
81°
58°
1
Hist. Avg.
81°
58°
2
Hist. Avg.
80°
57°
3
Hist. Avg.
80°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Volcano
Volcano's September 2026 forecast shows daily high temperatures ranging from 83° to 92°, with overnight lows between 56° and 62°. The average high for September is 89° with an average low of 60°. 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 Volcano. See also: October | November | December.