S
M
T
W
T
F
S
27
63°
58°
28
66°
60°
29
72°
60°
30
77°
58°
1
83°
64°
2
86°
67°
3
71°
61°
4
67°
59°
5
71°
54°
6
62°
45°
7
68°
43°
8
76°
53°
9
73°
49°
10
72°
49°
11
70°
65°
12
71°
56°
13
77°
57°
14
86°
68°
15
75°
60°
16
78°
63°
17
65°
44°
18
58°
41°
19
63°
45°
20
70°
48°
21
65°
48°
22
66°
50°
23
61°
39°
24
64°
37°
25
64°
38°
26
67°
39°
27
64°
51°
28
66°
45°
29
69°
45°
30
73°
54°
31
59°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in South Dennis
South Dennis's October 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for October is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in South Dennis. See also: November | December | January.