S
M
T
W
T
F
S
28
79°
60°
29
80°
62°
30
82°
61°
1
76°
59°
2
78°
60°
3
77°
58°
4
78°
63°
5
79°
65°
6
83°
67°
7
86°
68°
8
85°
67°
9
84°
67°
10
86°
66°
11
86°
67°
12
85°
66°
13
84°
66°
14
82°
65°
15
85°
66°
16
82°
61°
17
78°
59°
18
78°
63°
19
79°
59°
20
77°
58°
21
77°
59°
22
78°
62°
23
82°
66°
24
84°
67°
25
85°
66°
26
79°
65°
27
80°
61°
28
83°
64°
29
84°
61°
30
82°
58°
31
84°
60°
1
83°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Sumner
Sumner's July 2026 forecast shows daily high temperatures ranging from 76° to 86°, with overnight lows between 58° and 68°. The average high for July is 81° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Sumner. See also: August | September | October.