S
M
T
W
T
F
S
26
86°
68°
27
87°
67°
28
86°
66°
29
85°
67°
30
85°
62°
31
78°
60°
1
78°
60°
2
79°
61°
3
81°
62°
4
81°
60°
5
82°
60°
6
83°
63°
7
82°
66°
8
82°
65°
9
80°
66°
10
83°
59°
11
82°
60°
12
82°
60°
13
83°
65°
14
82°
66°
15
85°
64°
16
85°
66°
17
86°
66°
18
85°
64°
19
83°
58°
20
80°
58°
21
78°
57°
22
78°
57°
23
77°
56°
24
78°
58°
25
80°
57°
26
83°
56°
27
81°
57°
28
78°
61°
29
78°
58°
30
76°
59°
31
80°
61°
1
82°
55°
2
80°
54°
3
75°
53°
4
76°
55°
5
75°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Katonah
Katonah's August 2026 forecast shows daily high temperatures ranging from 75° to 87°, with overnight lows between 53° and 68°. The average high for August is 81° with an average low of 61°. 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 Katonah. See also: September | October | November.
