S
M
T
W
T
F
S
29
66°
32°
30
82°
43°
31
70°
45°
1
50°
36°
2
50°
34°
3
45°
37°
4
39°
28°
5
55°
31°
6
45°
20°
7
42°
35°
8
67°
42°
9
52°
35°
10
56°
39°
11
52°
43°
12
60°
47°
13
67°
46°
14
65°
38°
15
65°
40°
16
64°
41°
17
59°
37°
18
61°
44°
19
65°
43°
20
62°
44°
21
60°
44°
22
60°
43°
23
65°
40°
24
55°
34°
25
62°
45°
26
59°
45°
27
67°
44°
28
68°
41°
29
64°
42°
30
65°
44°
1
67°
46°
2
65°
42°
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 68°, with overnight lows between 20° and 47°. The average high for April is 60° with an average low of 40°. 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.