S
M
T
W
T
F
S
30
78°
58°
31
77°
59°
1
76°
60°
2
79°
61°
3
79°
52°
4
78°
50°
5
75°
50°
6
73°
52°
7
74°
54°
8
76°
50°
9
78°
51°
10
82°
52°
11
79°
47°
12
75°
49°
13
74°
48°
14
76°
50°
15
79°
52°
16
80°
53°
17
79°
54°
18
79°
55°
19
70°
44°
20
71°
43°
21
69°
45°
22
Hist. Avg.
74°
46°
23
Hist. Avg.
73°
46°
24
Hist. Avg.
73°
45°
25
Hist. Avg.
72°
44°
26
Hist. Avg.
72°
44°
27
Hist. Avg.
71°
44°
28
Hist. Avg.
71°
43°
29
Hist. Avg.
71°
43°
30
Hist. Avg.
70°
42°
1
Hist. Avg.
70°
42°
2
Hist. Avg.
69°
41°
3
Hist. Avg.
69°
41°
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 69° to 82°, with overnight lows between 43° and 61°. The average high for September is 76° with an average low of 52°. 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.
