S
M
T
W
T
F
S
28
82°
55°
29
85°
59°
30
85°
64°
1
89°
66°
2
91°
64°
3
89°
59°
4
88°
62°
5
79°
60°
6
82°
61°
7
82°
59°
8
83°
57°
9
84°
60°
10
80°
61°
11
77°
61°
12
78°
60°
13
78°
61°
14
78°
61°
15
79°
60°
16
83°
62°
17
82°
62°
18
85°
61°
19
85°
62°
20
84°
62°
21
82°
61°
22
81°
62°
23
84°
63°
24
85°
62°
25
84°
59°
26
78°
56°
27
82°
61°
28
80°
61°
29
78°
60°
30
82°
55°
31
77°
54°
1
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Greenwich
Greenwich's July 2026 forecast shows daily high temperatures ranging from 77° to 91°, with overnight lows between 54° and 66°. The average high for July is 82° with an average low of 60°. 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 Greenwich. See also: August | September | October.