S
M
T
W
T
F
S
30
106°
72°
31
105°
76°
1
105°
76°
2
104°
75°
3
102°
78°
4
106°
76°
5
106°
78°
6
105°
77°
7
105°
76°
8
105°
77°
9
105°
78°
10
99°
77°
11
94°
74°
12
99°
74°
13
102°
74°
14
102°
77°
15
103°
75°
16
100°
78°
17
102°
77°
18
102°
76°
19
100°
70°
20
100°
71°
21
99°
74°
22
90°
67°
23
90°
61°
24
87°
63°
25
90°
66°
26
90°
69°
27
89°
68°
28
88°
64°
29
83°
62°
30
82°
59°
1
81°
62°
2
78°
55°
3
81°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Branch
Branch's September 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 55° and 69°. The average high for September is 86° with an average low of 63°. 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 Branch. See also: October | November | December.