S
M
T
W
T
F
S
26
55°
49°
27
55°
48°
28
56°
48°
29
55°
50°
30
55°
48°
31
56°
48°
1
55°
49°
2
57°
49°
3
61°
53°
4
60°
53°
5
59°
52°
6
57°
48°
7
60°
49°
8
61°
53°
9
57°
53°
10
57°
52°
11
58°
53°
12
62°
53°
13
63°
52°
14
63°
53°
15
64°
53°
16
63°
51°
17
62°
52°
18
62°
50°
19
57°
48°
20
57°
48°
21
56°
50°
22
58°
52°
23
58°
49°
24
56°
49°
25
56°
48°
26
57°
49°
27
59°
50°
28
61°
51°
29
62°
52°
30
61°
52°
31
62°
53°
1
62°
53°
2
61°
52°
3
60°
50°
4
57°
46°
5
55°
44°
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 55° to 64°, with overnight lows between 44° and 53°. The average high for August is 59° with an average low of 50°. 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.
