S
M
T
W
T
F
S
26
97°
77°
27
98°
77°
28
98°
76°
29
97°
77°
30
98°
76°
31
97°
77°
1
98°
77°
2
97°
76°
3
97°
76°
4
96°
75°
5
97°
76°
6
96°
76°
7
93°
70°
8
94°
65°
9
89°
64°
10
91°
67°
11
90°
64°
12
94°
63°
13
85°
63°
14
85°
69°
15
86°
68°
16
86°
71°
17
93°
63°
18
86°
63°
19
84°
61°
20
85°
61°
21
85°
65°
22
86°
68°
23
91°
69°
24
93°
70°
25
92°
70°
26
91°
68°
27
92°
64°
28
87°
59°
29
82°
58°
30
83°
60°
31
82°
59°
1
83°
57°
2
80°
56°
3
81°
57°
4
81°
59°
5
80°
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 80° to 98°, with overnight lows between 56° and 77°. 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.
