S
M
T
W
T
F
S
28
81°
65°
29
85°
64°
30
87°
66°
1
93°
70°
2
98°
79°
3
97°
76°
4
92°
71°
5
79°
67°
6
67°
63°
7
71°
63°
8
81°
68°
9
82°
72°
10
90°
71°
11
83°
67°
12
81°
65°
13
86°
67°
14
87°
65°
15
84°
66°
16
84°
65°
17
86°
66°
18
84°
65°
19
82°
66°
20
81°
65°
21
79°
63°
22
80°
62°
23
82°
63°
24
84°
63°
25
84°
64°
26
86°
65°
27
85°
68°
28
86°
69°
29
86°
68°
30
85°
68°
31
85°
67°
1
84°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Cos Cob
Cos Cob's July 2026 forecast shows daily high temperatures ranging from 71° to 90°, with overnight lows between 62° and 72°. The average high for July is 83° 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 Cos Cob. See also: August | September | October.