S
M
T
W
T
F
S
26
84°
68°
27
85°
73°
28
81°
72°
29
83°
70°
30
76°
69°
31
86°
71°
1
87°
74°
2
86°
76°
3
86°
73°
4
85°
69°
5
85°
72°
6
91°
78°
7
94°
74°
8
91°
74°
9
91°
78°
10
91°
74°
11
88°
75°
12
87°
74°
13
86°
75°
14
86°
74°
15
85°
69°
16
82°
68°
17
80°
70°
18
85°
72°
19
88°
74°
20
86°
65°
21
79°
64°
22
77°
70°
23
82°
66°
24
82°
64°
25
80°
67°
26
83°
71°
27
80°
68°
28
83°
69°
29
80°
68°
30
78°
67°
31
77°
65°
1
81°
64°
2
76°
63°
3
74°
66°
4
78°
65°
5
76°
63°
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 74° to 83°, with overnight lows between 63° and 71°. The average high for August is 79° with an average low of 66°. 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.
