S
M
T
W
T
F
S
27
90°
66°
28
90°
64°
29
92°
62°
30
91°
67°
1
90°
72°
2
89°
73°
3
85°
72°
4
77°
71°
5
81°
69°
6
79°
67°
7
79°
61°
8
82°
62°
9
79°
63°
10
79°
67°
11
81°
66°
12
84°
67°
13
84°
63°
14
81°
62°
15
79°
60°
16
80°
56°
17
77°
60°
18
80°
59°
19
82°
60°
20
81°
59°
21
81°
60°
22
79°
58°
23
74°
54°
24
75°
54°
25
74°
49°
26
72°
57°
27
77°
52°
28
71°
52°
29
71°
56°
30
77°
58°
31
78°
58°
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 71° to 85°, with overnight lows between 49° and 72°. The average high for October is 79° with an average low of 60°. 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.
