S
M
T
W
T
F
S
29
54°
45°
30
52°
33°
31
49°
34°
1
59°
40°
2
53°
40°
3
61°
40°
4
70°
45°
5
71°
50°
6
74°
54°
7
65°
39°
8
62°
39°
9
66°
40°
10
67°
42°
11
66°
46°
12
64°
43°
13
63°
46°
14
64°
44°
15
66°
46°
16
65°
47°
17
71°
54°
18
58°
39°
19
55°
40°
20
56°
37°
21
58°
39°
22
58°
39°
23
57°
38°
24
61°
47°
25
60°
41°
26
65°
41°
27
68°
44°
28
70°
49°
29
70°
50°
30
71°
50°
1
72°
51°
2
71°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Walla Walla
Walla Walla's April 2026 forecast shows daily high temperatures ranging from 55° to 74°, with overnight lows between 37° and 54°. The average high for April is 65° with an average low of 44°. 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 Walla Walla. See also: May | June | July.