S
M
T
W
T
F
S
26
98°
61°
27
97°
69°
28
97°
60°
29
89°
54°
30
92°
55°
31
95°
53°
1
96°
54°
2
94°
54°
3
92°
50°
4
93°
52°
5
91°
54°
6
90°
56°
7
89°
56°
8
86°
57°
9
83°
56°
10
81°
55°
11
83°
51°
12
85°
56°
13
86°
57°
14
85°
56°
15
79°
55°
16
77°
51°
17
78°
48°
18
77°
50°
19
76°
48°
20
76°
46°
21
77°
51°
22
77°
52°
23
74°
51°
24
74°
48°
25
75°
47°
26
75°
51°
27
80°
45°
28
80°
52°
29
79°
49°
30
81°
51°
31
82°
52°
1
82°
52°
2
81°
51°
3
81°
52°
4
80°
52°
5
80°
51°
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 74° to 96°, with overnight lows between 45° and 57°. The average high for August is 83° with an average low of 52°. 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.