S
M
T
W
T
F
S
28
80°
66°
29
87°
63°
30
85°
65°
1
84°
69°
2
96°
73°
3
98°
75°
4
96°
72°
5
79°
68°
6
72°
67°
7
76°
65°
8
79°
68°
9
86°
73°
10
86°
70°
11
82°
66°
12
81°
66°
13
79°
67°
14
82°
67°
15
81°
68°
16
82°
66°
17
83°
68°
18
85°
67°
19
83°
69°
20
80°
64°
21
79°
65°
22
79°
64°
23
81°
65°
24
83°
66°
25
82°
67°
26
85°
69°
27
83°
70°
28
86°
71°
29
86°
71°
30
85°
70°
31
84°
71°
1
85°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Smithtown
Smithtown's July 2026 forecast shows daily high temperatures ranging from 72° to 86°, with overnight lows between 64° and 73°. The average high for July is 82° with an average low of 68°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Smithtown. See also: August | September | October.
