S
M
T
W
T
F
S
30
74°
56°
31
78°
59°
1
80°
55°
2
75°
54°
3
74°
55°
4
75°
59°
5
78°
61°
6
79°
61°
7
79°
59°
8
73°
58°
9
77°
60°
10
78°
58°
11
75°
59°
12
78°
59°
13
77°
56°
14
71°
51°
15
70°
52°
16
71°
51°
17
71°
55°
18
73°
56°
19
75°
56°
20
76°
57°
21
72°
52°
22
73°
54°
23
70°
55°
24
74°
54°
25
72°
48°
26
68°
54°
27
73°
53°
28
74°
54°
29
Hist. Avg.
72°
46°
30
Hist. Avg.
72°
45°
1
Hist. Avg.
71°
45°
2
Hist. Avg.
71°
44°
3
Hist. Avg.
70°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Rock Cave
Rock Cave's September 2026 forecast shows daily high temperatures ranging from 68° to 80°, with overnight lows between 48° and 61°. The average high for September is 74° with an average low of 56°. 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 Rock Cave. See also: October | November | December.