S
M
T
W
T
F
S
30
74°
57°
31
75°
56°
1
72°
55°
2
72°
57°
3
73°
59°
4
72°
58°
5
74°
57°
6
73°
56°
7
71°
55°
8
72°
56°
9
70°
55°
10
71°
60°
11
71°
55°
12
73°
54°
13
74°
53°
14
73°
58°
15
73°
57°
16
71°
53°
17
69°
52°
18
69°
53°
19
70°
57°
20
70°
58°
21
74°
57°
22
72°
56°
23
74°
56°
24
73°
54°
25
71°
56°
26
67°
49°
27
72°
49°
28
65°
48°
29
64°
49°
30
64°
48°
1
Hist. Avg.
66°
51°
2
Hist. Avg.
66°
51°
3
Hist. Avg.
65°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in West Dennis
West Dennis's September 2026 forecast shows daily high temperatures ranging from 64° to 75°, with overnight lows between 48° and 60°. The average high for September is 71° with an average low of 55°. 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 West Dennis. See also: October | November | December.
