S
M
T
W
T
F
S
28
78°
63°
29
85°
66°
30
85°
62°
1
86°
60°
2
83°
60°
3
81°
64°
4
83°
65°
5
86°
60°
6
84°
60°
7
80°
62°
8
81°
61°
9
79°
60°
10
78°
61°
11
82°
66°
12
86°
63°
13
83°
66°
14
84°
68°
15
82°
62°
16
82°
62°
17
81°
66°
18
85°
63°
19
87°
62°
20
82°
64°
21
81°
63°
22
81°
65°
23
80°
63°
24
81°
62°
25
81°
62°
26
82°
66°
27
86°
67°
28
84°
66°
29
81°
63°
30
82°
62°
31
81°
65°
1
83°
62°
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 78° to 87°, with overnight lows between 60° and 68°. The average high for July is 82° with an average low of 63°. 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.