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
82°
68°
10
85°
72°
11
82°
66°
12
83°
65°
13
81°
63°
14
85°
69°
15
92°
74°
16
90°
66°
17
86°
69°
18
79°
72°
19
86°
64°
20
83°
68°
21
82°
69°
22
82°
67°
23
82°
68°
24
81°
66°
25
80°
67°
26
81°
68°
27
79°
66°
28
79°
67°
29
82°
68°
30
79°
67°
31
79°
70°
1
80°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in South Setauket
South Setauket's July 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 64° and 72°. 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 South Setauket. See also: August | September | October.
