S
M
T
W
T
F
S
28
81°
62°
29
87°
66°
30
89°
73°
1
99°
74°
2
98°
72°
3
95°
68°
4
87°
64°
5
83°
63°
6
80°
64°
7
80°
63°
8
82°
65°
9
85°
64°
10
87°
62°
11
79°
64°
12
79°
65°
13
79°
59°
14
77°
58°
15
77°
58°
16
78°
60°
17
78°
60°
18
79°
61°
19
80°
63°
20
80°
66°
21
79°
66°
22
85°
65°
23
80°
66°
24
83°
67°
25
85°
67°
26
86°
68°
27
87°
67°
28
86°
66°
29
85°
67°
30
85°
62°
31
78°
60°
1
78°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Katonah
Katonah's July 2026 forecast shows daily high temperatures ranging from 77° to 99°, with overnight lows between 58° and 74°. The average high for July is 83° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Katonah. See also: August | September | October.