S
M
T
W
T
F
S
30
96°
75°
31
97°
74°
1
99°
68°
2
99°
71°
3
97°
72°
4
97°
73°
5
100°
70°
6
96°
73°
7
87°
71°
8
99°
70°
9
82°
71°
10
86°
63°
11
84°
62°
12
84°
64°
13
79°
59°
14
87°
73°
15
90°
65°
16
88°
68°
17
86°
68°
18
89°
70°
19
88°
66°
20
70°
58°
21
71°
54°
22
72°
54°
23
73°
58°
24
74°
57°
25
73°
58°
26
75°
59°
27
81°
61°
28
76°
60°
29
77°
59°
30
76°
60°
1
77°
60°
2
78°
59°
3
78°
58°
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 70° to 90°, with overnight lows between 54° and 73°. The average high for September is 79° with an average low of 61°. 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.
