S
M
T
W
T
F
S
29
51°
25°
30
71°
40°
31
78°
53°
1
75°
47°
2
47°
38°
3
63°
38°
4
67°
39°
5
54°
39°
6
51°
37°
7
51°
29°
8
47°
26°
9
53°
35°
10
67°
49°
11
63°
34°
12
61°
46°
13
72°
59°
14
81°
61°
15
82°
56°
16
74°
52°
17
67°
43°
18
62°
48°
19
63°
47°
20
61°
48°
21
70°
41°
22
66°
41°
23
57°
38°
24
58°
45°
25
57°
44°
26
56°
43°
27
58°
41°
28
59°
42°
29
58°
40°
30
58°
39°
1
60°
48°
2
69°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Katonah
Katonah's April 2026 forecast shows daily high temperatures ranging from 53° to 82°, with overnight lows between 34° and 61°. The average high for April is 64° with an average low of 45°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Katonah. See also: May | June | July.