S
M
T
W
T
F
S
27
70°
55°
28
69°
56°
29
68°
53°
30
65°
54°
1
64°
54°
2
72°
56°
3
65°
56°
4
63°
55°
5
68°
57°
6
71°
57°
7
70°
55°
8
67°
54°
9
64°
50°
10
60°
46°
11
59°
45°
12
60°
51°
13
63°
53°
14
65°
53°
15
68°
54°
16
67°
53°
17
64°
52°
18
67°
47°
19
57°
45°
20
56°
43°
21
59°
50°
22
64°
51°
23
64°
51°
24
63°
50°
25
56°
50°
26
55°
49°
27
55°
50°
28
60°
49°
29
63°
49°
30
52°
35°
31
50°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Mystic
Mystic's October 2026 forecast shows daily high temperatures ranging from 50° to 72°, with overnight lows between 35° and 57°. The average high for October is 63° 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 October weather will actually feel in Mystic. See also: November | December | January.