S
M
T
W
T
F
S
30
74°
52°
31
73°
51°
1
74°
52°
2
72°
50°
3
72°
50°
4
73°
53°
5
75°
55°
6
72°
55°
7
71°
51°
8
75°
49°
9
71°
51°
10
74°
57°
11
77°
55°
12
77°
57°
13
76°
50°
14
72°
52°
15
70°
47°
16
69°
47°
17
66°
55°
18
73°
52°
19
72°
53°
20
70°
45°
21
74°
44°
22
66°
42°
23
72°
52°
24
73°
47°
25
69°
43°
26
Hist. Avg.
66°
46°
27
Hist. Avg.
66°
46°
28
Hist. Avg.
65°
46°
29
Hist. Avg.
65°
45°
30
Hist. Avg.
64°
45°
1
Hist. Avg.
64°
44°
2
Hist. Avg.
63°
44°
3
Hist. Avg.
63°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Brunswick
Brunswick's September 2026 forecast shows daily high temperatures ranging from 66° to 77°, with overnight lows between 42° and 57°. The average high for September is 72° with an average low of 51°. 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.
