S
M
T
W
T
F
S
26
54°
40°
27
66°
40°
28
64°
41°
29
62°
45°
30
57°
39°
1
63°
46°
2
56°
39°
3
55°
38°
4
63°
48°
5
73°
51°
6
62°
45°
7
61°
38°
8
56°
39°
9
60°
45°
10
62°
44°
11
63°
42°
12
63°
45°
13
65°
44°
14
63°
42°
15
63°
48°
16
64°
47°
17
64°
44°
18
65°
51°
19
72°
52°
20
70°
52°
21
66°
51°
22
73°
48°
23
65°
48°
24
68°
49°
25
67°
46°
26
66°
49°
27
66°
51°
28
67°
55°
29
74°
54°
30
73°
53°
31
73°
52°
1
69°
47°
2
67°
47°
3
66°
48°
4
68°
48°
5
68°
49°
6
69°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mount Kisco
Mount Kisco's May 2026 forecast shows daily high temperatures ranging from 55° to 74°, with overnight lows between 38° and 55°. The average high for May is 65° with an average low of 47°. 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 Mount Kisco. See also: June | July | August.