S
M
T
W
T
F
S
26
102°
76°
27
102°
72°
28
92°
73°
29
90°
72°
30
91°
69°
31
91°
70°
1
90°
68°
2
95°
69°
3
96°
73°
4
95°
69°
5
90°
67°
6
97°
70°
7
94°
73°
8
94°
73°
9
95°
74°
10
94°
73°
11
95°
74°
12
95°
73°
13
94°
72°
14
94°
73°
15
93°
72°
16
92°
71°
17
88°
70°
18
92°
69°
19
92°
70°
20
93°
71°
21
93°
72°
22
92°
71°
23
93°
70°
24
92°
70°
25
92°
71°
26
91°
71°
27
92°
70°
28
92°
70°
29
91°
69°
30
91°
70°
31
90°
70°
1
91°
69°
2
91°
69°
3
88°
68°
4
80°
58°
5
84°
57°
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 102°, with overnight lows between 57° 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.
