S
M
T
W
T
F
S
26
87°
59°
27
91°
61°
28
93°
61°
29
92°
60°
30
93°
61°
31
94°
61°
1
93°
60°
2
93°
60°
3
92°
59°
4
86°
56°
5
83°
59°
6
83°
53°
7
86°
59°
8
92°
60°
9
93°
60°
10
92°
59°
11
92°
58°
12
89°
56°
13
85°
56°
14
85°
45°
15
81°
47°
16
83°
53°
17
88°
55°
18
91°
60°
19
90°
57°
20
91°
49°
21
87°
55°
22
90°
56°
23
92°
46°
24
80°
51°
25
85°
48°
26
82°
51°
27
85°
48°
28
83°
51°
29
82°
44°
30
77°
44°
31
79°
49°
1
85°
54°
2
87°
56°
3
88°
49°
4
77°
42°
5
76°
46°
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 76° to 94°, with overnight lows between 42° and 61°. The average high for August is 87° with an average low of 54°. 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.
