S
M
T
W
T
F
S
26
86°
71°
27
87°
65°
28
88°
68°
29
90°
69°
30
96°
66°
31
91°
68°
1
92°
66°
2
89°
66°
3
88°
67°
4
85°
64°
5
86°
64°
6
86°
64°
7
85°
65°
8
86°
67°
9
86°
66°
10
90°
69°
11
91°
69°
12
86°
71°
13
93°
66°
14
93°
62°
15
87°
62°
16
83°
67°
17
86°
68°
18
87°
67°
19
92°
67°
20
90°
69°
21
87°
67°
22
91°
66°
23
90°
67°
24
89°
68°
25
91°
67°
26
91°
67°
27
88°
68°
28
90°
67°
29
89°
67°
30
89°
66°
31
90°
66°
1
87°
65°
2
87°
65°
3
86°
58°
4
82°
57°
5
80°
57°
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 80° to 96°, with overnight lows between 57° and 71°. The average high for August is 88° 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 August weather will actually feel in Manhattan. See also: September | October | November.