S
M
T
W
T
F
S
27
86°
65°
28
85°
66°
29
83°
65°
30
85°
65°
1
86°
64°
2
87°
58°
3
83°
56°
4
80°
57°
5
80°
57°
6
81°
62°
7
83°
59°
8
84°
62°
9
83°
61°
10
83°
61°
11
84°
60°
12
83°
53°
13
77°
55°
14
78°
54°
15
80°
53°
16
80°
58°
17
78°
58°
18
80°
57°
19
80°
58°
20
81°
57°
21
81°
57°
22
82°
58°
23
80°
57°
24
81°
58°
25
82°
57°
26
80°
51°
27
79°
55°
28
76°
54°
29
75°
55°
30
76°
50°
31
74°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Smithtown
Smithtown's October 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 47° and 66°. The average high for October is 81° with an average low of 58°. 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 Smithtown. See also: November | December | January.
