S
M
T
W
T
F
S
29
46°
14°
30
65°
30°
31
50°
36°
1
46°
28°
2
45°
32°
3
53°
40°
4
49°
34°
5
47°
36°
6
42°
28°
7
40°
21°
8
39°
27°
9
51°
38°
10
58°
37°
11
63°
42°
12
53°
34°
13
52°
36°
14
55°
30°
15
46°
35°
16
54°
26°
17
44°
26°
18
45°
27°
19
47°
34°
20
51°
37°
21
58°
37°
22
56°
35°
23
49°
36°
24
50°
38°
25
59°
39°
26
53°
39°
27
50°
38°
28
51°
39°
29
52°
40°
30
58°
41°
1
53°
40°
2
56°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Sumner
Sumner's April 2026 forecast shows daily high temperatures ranging from 39° to 63°, with overnight lows between 21° and 42°. The average high for April is 51° with an average low of 35°. 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 Sumner. See also: May | June | July.