S
M
T
W
T
F
S
28
81°
65°
29
85°
64°
30
89°
73°
1
94°
77°
2
100°
79°
3
102°
76°
4
94°
74°
5
89°
68°
6
87°
66°
7
83°
63°
8
84°
64°
9
84°
65°
10
83°
67°
11
84°
67°
12
82°
66°
13
83°
65°
14
78°
62°
15
78°
60°
16
79°
62°
17
80°
62°
18
80°
63°
19
81°
65°
20
81°
68°
21
80°
68°
22
85°
67°
23
81°
68°
24
84°
67°
25
86°
68°
26
87°
69°
27
87°
69°
28
86°
68°
29
86°
68°
30
85°
64°
31
79°
62°
1
79°
62°
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 78° to 102°, with overnight lows between 60° and 79°. The average high for July is 85° with an average low of 67°. 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.