S
M
T
W
T
F
S
30
88°
73°
31
89°
73°
1
87°
72°
2
86°
72°
3
87°
74°
4
88°
75°
5
89°
74°
6
86°
73°
7
84°
74°
8
85°
73°
9
84°
74°
10
86°
72°
11
85°
73°
12
87°
72°
13
87°
72°
14
86°
73°
15
87°
74°
16
87°
72°
17
86°
71°
18
86°
73°
19
85°
72°
20
85°
70°
21
84°
69°
22
86°
71°
23
86°
72°
24
85°
68°
25
85°
68°
26
84°
68°
27
83°
71°
28
84°
70°
29
82°
68°
30
82°
69°
1
81°
70°
2
82°
69°
3
82°
69°
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 81° to 89°, with overnight lows between 68° and 75°. The average high for September is 85° 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.
