S
M
T
W
T
F
S
26
85°
64°
27
83°
68°
28
79°
69°
29
79°
67°
30
75°
68°
31
83°
69°
1
83°
70°
2
82°
70°
3
83°
71°
4
82°
72°
5
85°
71°
6
83°
70°
7
86°
72°
8
85°
71°
9
86°
73°
10
87°
70°
11
86°
73°
12
81°
72°
13
82°
73°
14
86°
68°
15
81°
66°
16
79°
65°
17
79°
69°
18
80°
68°
19
79°
66°
20
79°
66°
21
80°
71°
22
82°
70°
23
79°
65°
24
78°
65°
25
77°
66°
26
78°
65°
27
77°
64°
28
78°
64°
29
77°
63°
30
78°
65°
31
82°
71°
1
84°
72°
2
82°
70°
3
78°
66°
4
76°
63°
5
75°
62°
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 75° to 87°, with overnight lows between 62° and 73°. The average high for August is 81° with an average low of 68°. 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.