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
88°
66°
19
96°
70°
20
92°
53°
21
67°
45°
22
62°
50°
23
60°
55°
24
67°
54°
25
71°
56°
26
72°
55°
27
74°
57°
28
76°
56°
29
76°
57°
30
75°
58°
31
78°
54°
1
73°
56°
2
70°
54°
3
67°
54°
4
69°
58°
5
73°
57°
6
74°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Chappaqua
Chappaqua's May 2026 forecast shows daily high temperatures ranging from 60° to 96°, with overnight lows between 45° and 70°. The average high for May is 74° with an average low of 56°. 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 Chappaqua. See also: June | July | August.