S
M
T
W
T
F
S
26
79°
58°
27
84°
60°
28
80°
57°
29
79°
59°
30
84°
60°
31
81°
55°
1
84°
61°
2
85°
62°
3
80°
55°
4
83°
54°
5
79°
55°
6
79°
54°
7
85°
54°
8
80°
55°
9
81°
60°
10
84°
59°
11
83°
57°
12
84°
59°
13
85°
61°
14
85°
61°
15
80°
60°
16
85°
52°
17
81°
52°
18
77°
53°
19
77°
53°
20
75°
54°
21
76°
51°
22
76°
57°
23
78°
58°
24
83°
59°
25
85°
58°
26
84°
48°
27
79°
49°
28
74°
48°
29
74°
50°
30
75°
55°
31
79°
57°
1
82°
57°
2
82°
55°
3
80°
51°
4
81°
55°
5
80°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Greenwich
Greenwich's August 2026 forecast shows daily high temperatures ranging from 74° to 85°, with overnight lows between 48° and 62°. The average high for August is 81° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Greenwich. See also: September | October | November.
