S
M
T
W
T
F
S
26
87°
73°
27
88°
74°
28
87°
74°
29
84°
73°
30
83°
73°
31
87°
74°
1
88°
73°
2
86°
74°
3
87°
72°
4
88°
73°
5
87°
73°
6
83°
72°
7
82°
69°
8
83°
67°
9
82°
67°
10
81°
68°
11
82°
72°
12
85°
72°
13
87°
71°
14
86°
66°
15
81°
66°
16
81°
70°
17
82°
72°
18
81°
66°
19
83°
66°
20
82°
67°
21
84°
67°
22
85°
66°
23
85°
65°
24
84°
65°
25
82°
66°
26
83°
70°
27
85°
71°
28
82°
70°
29
84°
72°
30
85°
68°
31
83°
63°
1
81°
62°
2
77°
63°
3
77°
63°
4
78°
64°
5
77°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sunnyside
Sunnyside's August 2026 forecast shows daily high temperatures ranging from 77° to 88°, with overnight lows between 62° and 74°. The average high for August is 83° with an average low of 69°. 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 Sunnyside. See also: September | October | November.
