S
M
T
W
T
F
S
28
83°
65°
29
88°
65°
30
91°
72°
1
94°
75°
2
93°
75°
3
95°
71°
4
88°
71°
5
83°
67°
6
82°
64°
7
82°
65°
8
84°
67°
9
85°
64°
10
84°
66°
11
82°
66°
12
84°
65°
13
85°
67°
14
83°
65°
15
84°
62°
16
78°
61°
17
77°
59°
18
80°
63°
19
83°
65°
20
84°
65°
21
83°
64°
22
84°
66°
23
84°
66°
24
83°
65°
25
84°
65°
26
85°
66°
27
85°
66°
28
84°
67°
29
84°
67°
30
85°
66°
31
84°
65°
1
79°
64°
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 95°, with overnight lows between 59° and 75°. The average high for July is 84° 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 Greenwich. See also: August | September | October.