S
M
T
W
T
F
S
28
82°
67°
29
78°
66°
30
77°
63°
1
76°
62°
2
77°
64°
3
78°
68°
4
81°
69°
5
81°
67°
6
78°
64°
7
78°
65°
8
79°
69°
9
80°
70°
10
81°
70°
11
83°
69°
12
82°
68°
13
86°
69°
14
86°
65°
15
82°
64°
16
81°
65°
17
82°
63°
18
81°
65°
19
81°
70°
20
80°
67°
21
83°
70°
22
83°
66°
23
80°
65°
24
83°
65°
25
86°
68°
26
86°
69°
27
83°
66°
28
86°
64°
29
82°
64°
30
81°
70°
31
80°
66°
1
85°
65°
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 76° to 86°, with overnight lows between 62° and 70°. The average high for July is 81° with an average low of 66°. 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.
