S
M
T
W
T
F
S
26
54°
40°
27
66°
40°
28
64°
41°
29
62°
45°
30
58°
46°
1
64°
42°
2
59°
46°
3
58°
42°
4
71°
48°
5
77°
51°
6
66°
53°
7
62°
46°
8
60°
43°
9
64°
48°
10
68°
50°
11
60°
47°
12
65°
40°
13
68°
46°
14
65°
51°
15
65°
47°
16
77°
46°
17
87°
62°
18
84°
63°
19
96°
68°
20
94°
53°
21
69°
45°
22
63°
46°
23
60°
51°
24
64°
52°
25
69°
57°
26
72°
59°
27
76°
57°
28
75°
55°
29
75°
57°
30
76°
58°
31
80°
61°
1
81°
55°
2
71°
54°
3
67°
54°
4
70°
58°
5
74°
57°
6
75°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Katonah
Katonah's May 2026 forecast shows daily high temperatures ranging from 60° to 96°, with overnight lows between 45° and 68°. The average high for May is 74° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Katonah. See also: June | July | August.
