S
M
T
W
T
F
S
26
83°
68°
27
78°
65°
28
77°
62°
29
78°
65°
30
83°
69°
31
84°
68°
1
81°
67°
2
83°
66°
3
85°
60°
4
78°
60°
5
78°
63°
6
79°
61°
7
78°
60°
8
79°
59°
9
78°
58°
10
78°
65°
11
80°
63°
12
81°
64°
13
84°
59°
14
77°
59°
15
78°
60°
16
77°
60°
17
76°
59°
18
76°
58°
19
77°
57°
20
78°
59°
21
80°
63°
22
82°
65°
23
83°
66°
24
84°
65°
25
84°
63°
26
83°
61°
27
81°
63°
28
82°
64°
29
80°
56°
30
79°
55°
31
75°
53°
1
74°
55°
2
74°
55°
3
75°
56°
4
74°
54°
5
73°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Manhattan
Manhattan's August 2026 forecast shows daily high temperatures ranging from 73° to 85°, with overnight lows between 53° and 69°. The average high for August is 79° with an average low of 61°. 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 Manhattan. See also: September | October | November.