S
M
T
W
T
F
S
26
49°
39°
27
56°
43°
28
44°
33°
29
64°
31°
30
62°
34°
1
64°
31°
2
74°
27°
3
77°
39°
4
79°
41°
5
52°
42°
6
58°
39°
7
75°
39°
8
78°
45°
9
74°
39°
10
74°
38°
11
86°
54°
12
80°
48°
13
83°
40°
14
88°
57°
15
94°
44°
16
88°
50°
17
77°
52°
18
52°
43°
19
62°
40°
20
58°
47°
21
63°
48°
22
67°
48°
23
73°
53°
24
79°
52°
25
81°
54°
26
82°
55°
27
77°
54°
28
77°
57°
29
79°
57°
30
78°
56°
31
78°
54°
1
77°
52°
2
77°
56°
3
72°
51°
4
76°
57°
5
81°
58°
6
80°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sumner
Sumner's May 2026 forecast shows daily high temperatures ranging from 58° to 82°, with overnight lows between 40° and 58°. The average high for May is 75° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Sumner. See also: June | July | August.
