S
M
T
W
T
F
S
30
66°
51°
31
65°
52°
1
65°
54°
2
67°
52°
3
66°
50°
4
65°
51°
5
64°
53°
6
65°
50°
7
67°
52°
8
68°
50°
9
68°
50°
10
67°
51°
11
63°
52°
12
65°
48°
13
67°
50°
14
67°
49°
15
66°
45°
16
62°
50°
17
66°
48°
18
66°
47°
19
65°
52°
20
66°
52°
21
66°
51°
22
64°
51°
23
62°
49°
24
63°
50°
25
61°
50°
26
63°
49°
27
64°
50°
28
63°
49°
29
63°
48°
30
62°
47°
1
Hist. Avg.
59°
46°
2
Hist. Avg.
59°
45°
3
Hist. Avg.
59°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Brampton Bryan
Brampton Bryan's September 2026 forecast shows daily high temperatures ranging from 61° to 68°, with overnight lows between 45° and 54°. The average high for September is 65° with an average low of 50°. 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 Brampton Bryan. See also: October | November | December.