S
M
T
W
T
F
S
26
95°
65°
27
87°
65°
28
86°
66°
29
86°
71°
30
92°
73°
31
95°
68°
1
96°
65°
2
88°
65°
3
88°
66°
4
87°
64°
5
86°
65°
6
87°
66°
7
86°
65°
8
85°
64°
9
87°
65°
10
86°
64°
11
85°
65°
12
85°
64°
13
86°
62°
14
85°
61°
15
84°
62°
16
85°
62°
17
85°
63°
18
86°
62°
19
85°
64°
20
86°
68°
21
85°
66°
22
90°
67°
23
92°
69°
24
92°
71°
25
91°
69°
26
92°
65°
27
87°
66°
28
84°
67°
29
90°
65°
30
87°
60°
31
83°
59°
1
81°
59°
2
81°
63°
3
Hist. Avg.
86°
61°
4
Hist. Avg.
86°
60°
5
Hist. Avg.
85°
60°
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 96°, with overnight lows between 59° and 73°. The average high for August is 87° with an average low of 65°. 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.