S
M
T
W
T
F
S
29
82°
52°
30
80°
58°
31
85°
63°
1
84°
65°
2
82°
68°
3
81°
53°
4
64°
48°
5
71°
48°
6
69°
48°
7
74°
52°
8
72°
57°
9
75°
62°
10
74°
62°
11
72°
63°
12
70°
60°
13
71°
56°
14
74°
55°
15
75°
52°
16
76°
59°
17
72°
58°
18
73°
57°
19
76°
58°
20
78°
59°
21
79°
60°
22
79°
60°
23
80°
61°
24
80°
60°
25
79°
56°
26
72°
54°
27
72°
51°
28
76°
60°
29
73°
56°
30
72°
53°
1
74°
61°
2
78°
62°
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 64° to 82°, with overnight lows between 48° and 68°. The average high for April is 75° with an average low of 57°. 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.