S
M
T
W
T
F
S
26
100°
74°
27
100°
80°
28
91°
76°
29
87°
75°
30
88°
76°
31
86°
70°
1
84°
63°
2
86°
61°
3
90°
65°
4
88°
68°
5
76°
67°
6
86°
69°
7
91°
68°
8
92°
69°
9
97°
77°
10
95°
71°
11
97°
74°
12
98°
76°
13
101°
72°
14
100°
75°
15
98°
74°
16
88°
68°
17
85°
68°
18
91°
73°
19
94°
72°
20
99°
73°
21
96°
69°
22
92°
68°
23
89°
68°
24
88°
69°
25
85°
62°
26
93°
71°
27
93°
70°
28
90°
69°
29
91°
68°
30
92°
70°
31
92°
70°
1
91°
69°
2
92°
70°
3
92°
70°
4
91°
69°
5
91°
68°
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 85° to 101°, with overnight lows between 62° and 76°. The average high for August is 92° with an average low of 70°. 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.