S
M
T
W
T
F
S
26
95°
73°
27
92°
73°
28
86°
71°
29
89°
74°
30
94°
75°
31
94°
73°
1
90°
74°
2
93°
74°
3
87°
66°
4
87°
71°
5
90°
66°
6
94°
65°
7
92°
64°
8
87°
65°
9
87°
68°
10
88°
70°
11
89°
65°
12
87°
63°
13
85°
64°
14
85°
66°
15
86°
66°
16
85°
63°
17
85°
62°
18
84°
62°
19
85°
63°
20
85°
69°
21
88°
71°
22
92°
70°
23
92°
69°
24
91°
68°
25
91°
63°
26
85°
62°
27
82°
61°
28
83°
60°
29
85°
62°
30
83°
62°
31
82°
61°
1
83°
64°
2
84°
65°
3
87°
65°
4
86°
57°
5
81°
56°
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 81° to 95°, with overnight lows between 56° and 75°. 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.