S
M
T
W
T
F
S
30
76°
67°
31
86°
72°
1
88°
74°
2
89°
72°
3
87°
70°
4
80°
66°
5
77°
55°
6
76°
58°
7
78°
60°
8
76°
61°
9
83°
64°
10
79°
59°
11
76°
60°
12
75°
59°
13
70°
56°
14
72°
56°
15
71°
55°
16
76°
60°
17
76°
59°
18
71°
59°
19
77°
60°
20
76°
60°
21
75°
59°
22
74°
58°
23
72°
56°
24
68°
57°
25
74°
58°
26
72°
56°
27
65°
51°
28
63°
50°
29
64°
50°
30
63°
47°
1
61°
46°
2
62°
54°
3
67°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Brunswick
Brunswick's September 2026 forecast shows daily high temperatures ranging from 61° to 89°, with overnight lows between 46° and 72°. The average high for September is 73° 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 Brunswick. See also: October | November | December.
