S
M
T
W
T
F
S
30
78°
58°
31
72°
53°
1
71°
55°
2
71°
53°
3
70°
52°
4
71°
54°
5
71°
59°
6
72°
60°
7
75°
57°
8
78°
56°
9
76°
56°
10
71°
59°
11
77°
57°
12
78°
56°
13
75°
58°
14
75°
56°
15
77°
47°
16
73°
46°
17
66°
45°
18
66°
52°
19
69°
52°
20
69°
54°
21
71°
54°
22
68°
53°
23
72°
54°
24
73°
52°
25
69°
53°
26
73°
54°
27
72°
44°
28
72°
42°
29
70°
42°
30
60°
46°
1
59°
41°
2
62°
46°
3
60°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cape Neddick
Cape Neddick's September 2026 forecast shows daily high temperatures ranging from 59° to 78°, with overnight lows between 41° and 60°. The average high for September is 71° 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 Cape Neddick. See also: October | November | December.
