S
M
T
W
T
F
S
29
78°
38°
30
85°
40°
31
54°
34°
1
41°
31°
2
40°
36°
3
37°
32°
4
46°
29°
5
65°
35°
6
45°
29°
7
46°
39°
8
69°
37°
9
57°
36°
10
58°
39°
11
57°
39°
12
60°
44°
13
73°
43°
14
68°
43°
15
69°
46°
16
67°
41°
17
64°
37°
18
68°
44°
19
66°
42°
20
62°
44°
21
59°
43°
22
57°
40°
23
58°
38°
24
59°
36°
25
65°
47°
26
72°
46°
27
72°
47°
28
71°
47°
29
72°
48°
30
71°
48°
1
71°
47°
2
72°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Walnut
Walnut's April 2026 forecast shows daily high temperatures ranging from 45° to 73°, with overnight lows between 29° and 49°. The average high for April is 63° with an average low of 41°. 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 Walnut. See also: May | June | July.
