S
M
T
W
T
F
S
30
94°
71°
31
96°
72°
1
96°
74°
2
97°
73°
3
98°
74°
4
95°
74°
5
95°
73°
6
99°
74°
7
100°
73°
8
95°
72°
9
92°
73°
10
92°
71°
11
92°
71°
12
92°
71°
13
95°
70°
14
94°
71°
15
92°
69°
16
91°
68°
17
92°
69°
18
91°
67°
19
90°
67°
20
86°
64°
21
90°
69°
22
89°
68°
23
89°
67°
24
88°
67°
25
89°
68°
26
89°
67°
27
88°
67°
28
88°
66°
29
87°
67°
30
87°
66°
1
86°
60°
2
84°
58°
3
77°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Brandon
Brandon's September 2026 forecast shows daily high temperatures ranging from 77° to 100°, with overnight lows between 56° and 73°. The average high for September is 90° with an average low of 67°. 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 Brandon. See also: October | November | December.