S
M
T
W
T
F
S
26
87°
65°
27
87°
66°
28
88°
70°
29
92°
72°
30
90°
71°
31
93°
70°
1
93°
72°
2
92°
73°
3
94°
73°
4
95°
69°
5
95°
65°
6
91°
63°
7
85°
63°
8
84°
64°
9
85°
64°
10
86°
65°
11
87°
71°
12
92°
70°
13
93°
69°
14
92°
70°
15
93°
69°
16
93°
63°
17
85°
62°
18
85°
65°
19
88°
65°
20
92°
66°
21
92°
62°
22
84°
69°
23
91°
70°
24
92°
69°
25
92°
67°
26
90°
69°
27
90°
70°
28
91°
68°
29
90°
69°
30
91°
66°
31
88°
66°
1
87°
64°
2
87°
64°
3
86°
63°
4
85°
66°
5
88°
63°
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 84° to 95°, with overnight lows between 62° and 73°. The average high for August is 90° with an average low of 67°. 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.