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
63°
41°
8
59°
42°
9
58°
48°
10
70°
49°
11
58°
41°
12
60°
40°
13
59°
44°
14
63°
45°
15
65°
50°
16
70°
50°
17
68°
50°
18
71°
50°
19
69°
51°
20
68°
48°
21
65°
44°
22
64°
44°
23
65°
45°
24
66°
46°
25
70°
51°
26
74°
52°
27
69°
50°
28
71°
49°
29
67°
46°
30
71°
52°
31
76°
55°
1
75°
55°
2
73°
52°
3
73°
53°
4
77°
56°
5
77°
56°
6
76°
57°
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 58° to 77°, with overnight lows between 40° and 57°. The average high for May is 68° with an average low of 49°. 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.
