S
M
T
W
T
F
S
26
92°
73°
27
93°
72°
28
84°
69°
29
83°
66°
30
82°
63°
31
69°
62°
1
79°
62°
2
81°
63°
3
82°
60°
4
74°
64°
5
67°
60°
6
81°
60°
7
81°
64°
8
80°
58°
9
83°
63°
10
87°
69°
11
84°
73°
12
84°
72°
13
77°
66°
14
73°
64°
15
75°
68°
16
79°
63°
17
79°
57°
18
82°
63°
19
79°
63°
20
79°
57°
21
84°
63°
22
77°
57°
23
75°
50°
24
77°
52°
25
77°
55°
26
79°
59°
27
79°
55°
28
81°
54°
29
75°
63°
30
77°
66°
31
86°
70°
1
88°
68°
2
82°
68°
3
86°
70°
4
90°
72°
5
81°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sumner
Sumner's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Sumner. See also: September | October | November.
