S
M
T
W
T
F
S
30
86°
65°
31
86°
64°
1
85°
63°
2
86°
59°
3
84°
60°
4
84°
60°
5
83°
61°
6
85°
59°
7
86°
64°
8
86°
64°
9
87°
63°
10
87°
64°
11
86°
63°
12
85°
64°
13
86°
64°
14
84°
61°
15
80°
58°
16
78°
60°
17
80°
59°
18
74°
55°
19
73°
51°
20
74°
53°
21
81°
53°
22
82°
51°
23
82°
57°
24
79°
50°
25
74°
52°
26
78°
53°
27
78°
57°
28
79°
55°
29
74°
49°
30
69°
49°
1
74°
50°
2
78°
51°
3
78°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rock Branch
Rock Branch's September 2026 forecast shows daily high temperatures ranging from 69° to 87°, with overnight lows between 49° and 65°. The average high for September is 81° with an average low of 58°. 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 Branch. See also: October | November | December.
