S
M
T
W
T
F
S
30
86°
60°
31
87°
60°
1
80°
57°
2
86°
60°
3
82°
59°
4
78°
61°
5
79°
60°
6
84°
62°
7
85°
59°
8
86°
61°
9
85°
62°
10
84°
62°
11
87°
62°
12
88°
67°
13
85°
61°
14
83°
62°
15
80°
59°
16
76°
56°
17
72°
57°
18
74°
56°
19
80°
57°
20
78°
54°
21
78°
57°
22
72°
55°
23
60°
53°
24
67°
53°
25
70°
53°
26
75°
63°
27
77°
64°
28
77°
56°
29
61°
54°
30
63°
50°
1
64°
49°
2
54°
48°
3
69°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Capitan
Capitan'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 Capitan. See also: October | November | December.