S
M
T
W
T
F
S
26
95°
75°
27
95°
75°
28
96°
76°
29
96°
75°
30
95°
75°
31
96°
76°
1
96°
76°
2
97°
75°
3
96°
75°
4
95°
74°
5
96°
75°
6
96°
74°
7
94°
74°
8
94°
73°
9
93°
73°
10
87°
74°
11
89°
73°
12
93°
71°
13
92°
72°
14
93°
73°
15
94°
72°
16
94°
71°
17
93°
63°
18
87°
60°
19
83°
60°
20
82°
61°
21
82°
61°
22
83°
62°
23
82°
62°
24
83°
63°
25
86°
66°
26
88°
65°
27
87°
60°
28
83°
62°
29
85°
68°
30
90°
68°
31
91°
64°
1
91°
60°
2
81°
65°
3
85°
66°
4
89°
67°
5
89°
58°
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 97°, with overnight lows between 58° and 76°. The average high for August is 90° with an average low of 69°. 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.