S
M
T
W
T
F
S
27
62°
58°
28
62°
56°
29
68°
55°
30
73°
58°
1
77°
60°
2
84°
61°
3
71°
53°
4
60°
53°
5
68°
50°
6
61°
43°
7
64°
39°
8
73°
50°
9
69°
46°
10
67°
46°
11
58°
51°
12
70°
52°
13
70°
53°
14
76°
59°
15
63°
50°
16
68°
54°
17
58°
36°
18
57°
35°
19
63°
38°
20
69°
43°
21
64°
41°
22
65°
41°
23
59°
41°
24
61°
37°
25
65°
37°
26
68°
44°
27
57°
34°
28
56°
44°
29
66°
48°
30
70°
47°
31
63°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Chappaqua
Chappaqua's October 2026 forecast shows daily high temperatures ranging from 56° to 70°, with overnight lows between 34° and 48°. The average high for October is 64° with an average low of 43°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Chappaqua. See also: November | December | January.