S
M
T
W
T
F
S
27
67°
58°
28
73°
57°
29
73°
55°
30
67°
52°
1
66°
52°
2
68°
56°
3
72°
53°
4
71°
56°
5
72°
55°
6
64°
55°
7
70°
56°
8
70°
53°
9
69°
51°
10
61°
51°
11
67°
47°
12
60°
50°
13
65°
52°
14
69°
53°
15
69°
52°
16
67°
52°
17
69°
49°
18
60°
45°
19
58°
50°
20
61°
51°
21
66°
50°
22
66°
44°
23
55°
40°
24
54°
43°
25
59°
49°
26
67°
44°
27
62°
38°
28
57°
37°
29
59°
42°
30
62°
47°
31
64°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Mastic
Mastic's October 2026 forecast shows daily high temperatures ranging from 54° to 73°, with overnight lows between 37° and 58°. The average high for October is 65° with an average low of 50°. 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 Mastic. See also: November | December | January.