S
M
T
W
T
F
S
26
81°
58°
27
84°
63°
28
80°
65°
29
81°
66°
30
78°
64°
31
84°
64°
1
86°
67°
2
83°
71°
3
81°
65°
4
83°
61°
5
83°
72°
6
87°
72°
7
87°
72°
8
88°
71°
9
86°
67°
10
88°
67°
11
83°
65°
12
82°
62°
13
79°
61°
14
79°
62°
15
78°
61°
16
77°
60°
17
76°
59°
18
77°
60°
19
80°
63°
20
82°
60°
21
79°
56°
22
78°
60°
23
83°
63°
24
84°
64°
25
83°
63°
26
82°
62°
27
75°
62°
28
75°
61°
29
80°
62°
30
81°
61°
31
81°
61°
1
80°
56°
2
74°
54°
3
72°
53°
4
73°
53°
5
73°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mount Kisco
Mount Kisco's August 2026 forecast shows daily high temperatures ranging from 72° to 88°, with overnight lows between 52° and 72°. The average high for August is 80° with an average low of 62°. 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 Mount Kisco. See also: September | October | November.