S
M
T
W
T
F
S
30
88°
77°
31
84°
77°
1
88°
77°
2
88°
77°
3
90°
79°
4
86°
79°
5
93°
77°
6
93°
77°
7
86°
77°
8
88°
82°
9
88°
79°
10
88°
75°
11
89°
74°
12
90°
75°
13
91°
74°
14
89°
75°
15
88°
76°
16
87°
73°
17
86°
74°
18
87°
72°
19
85°
73°
20
84°
72°
21
83°
70°
22
81°
71°
23
80°
68°
24
81°
67°
25
79°
73°
26
80°
72°
27
80°
72°
28
81°
71°
29
83°
72°
30
83°
72°
1
82°
71°
2
83°
71°
3
83°
70°
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 79° to 91°, with overnight lows between 67° and 76°. The average high for September is 84° with an average low of 72°. 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.
