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
81°
68°
6
69°
64°
7
70°
63°
8
80°
63°
9
N/A
10
89°
70°
11
84°
66°
12
84°
66°
13
85°
69°
14
89°
74°
15
96°
72°
16
90°
69°
17
87°
71°
18
85°
71°
19
83°
69°
20
84°
68°
21
85°
68°
22
83°
67°
23
81°
65°
24
85°
67°
25
80°
66°
26
79°
68°
27
85°
70°
28
81°
71°
29
83°
70°
30
84°
70°
31
80°
69°
1
81°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Smithtown
Smithtown's July 2026 forecast shows daily high temperatures ranging from 79° to 96°, with overnight lows between 65° and 74°. The average high for July is 84° with an average low of 69°. 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.
