S
M
T
W
T
F
S
31
66°
55°
1
79°
59°
2
82°
56°
3
81°
60°
4
77°
64°
5
78°
64°
6
84°
64°
7
85°
63°
8
82°
66°
9
83°
63°
10
86°
62°
11
84°
62°
12
81°
59°
13
80°
56°
14
77°
58°
15
80°
59°
16
74°
54°
17
74°
55°
18
75°
59°
19
76°
57°
20
77°
63°
21
75°
64°
22
77°
64°
23
80°
60°
24
78°
59°
25
79°
65°
26
84°
63°
27
79°
61°
28
78°
62°
29
77°
59°
30
78°
63°
1
80°
66°
2
81°
66°
3
82°
64°
4
78°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Sumner
Sumner's June 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 54° and 66°. The average high for June is 79° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Sumner. See also: July | August | September.