S
M
T
W
T
F
S
28
79°
64°
29
77°
59°
30
75°
64°
1
79°
64°
2
77°
63°
3
81°
59°
4
84°
63°
5
82°
64°
6
90°
66°
7
88°
68°
8
91°
70°
9
93°
72°
10
84°
68°
11
81°
64°
12
83°
57°
13
80°
60°
14
84°
61°
15
82°
61°
16
80°
60°
17
81°
62°
18
79°
61°
19
78°
60°
20
79°
62°
21
80°
62°
22
79°
61°
23
78°
60°
24
79°
61°
25
73°
57°
26
71°
56°
27
71°
54°
28
72°
55°
29
74°
57°
30
76°
56°
31
76°
56°
1
75°
57°
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 71° to 84°, with overnight lows between 54° and 62°. The average high for July is 78° with an average low of 59°. 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.