S
M
T
W
T
F
S
30
88°
70°
31
84°
70°
1
93°
72°
2
92°
72°
3
95°
71°
4
88°
66°
5
82°
60°
6
80°
58°
7
80°
58°
8
78°
56°
9
79°
55°
10
85°
59°
11
81°
58°
12
80°
54°
13
80°
53°
14
81°
54°
15
77°
59°
16
74°
58°
17
73°
54°
18
72°
49°
19
72°
50°
20
73°
53°
21
76°
54°
22
79°
56°
23
80°
57°
24
80°
56°
25
78°
54°
26
77°
55°
27
78°
56°
28
77°
55°
29
78°
54°
30
73°
50°
1
69°
47°
2
70°
50°
3
75°
52°
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 69° to 95°, with overnight lows between 47° and 72°. The average high for September is 79° with an average low of 57°. 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.
