S
M
T
W
T
F
S
28
72°
52°
29
72°
54°
30
73°
54°
1
72°
52°
2
72°
51°
3
70°
51°
4
72°
55°
5
71°
54°
6
76°
49°
7
74°
48°
8
68°
50°
9
68°
55°
10
74°
54°
11
73°
52°
12
71°
56°
13
74°
52°
14
72°
57°
15
69°
53°
16
76°
56°
17
75°
51°
18
73°
51°
19
71°
50°
20
67°
54°
21
73°
57°
22
70°
57°
23
70°
56°
24
75°
57°
25
76°
56°
26
76°
54°
27
75°
57°
28
76°
59°
29
75°
57°
30
77°
54°
31
Hist. Avg.
72°
53°
1
Hist. Avg.
72°
53°
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 67° to 77°, with overnight lows between 48° and 59°. The average high for July is 73° with an average low of 54°. 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.
