S
M
T
W
T
F
S
28
53°
45°
29
53°
44°
30
54°
45°
1
57°
46°
2
55°
46°
3
56°
47°
4
55°
49°
5
54°
48°
6
53°
48°
7
54°
49°
8
54°
46°
9
55°
46°
10
54°
47°
11
53°
48°
12
53°
48°
13
54°
47°
14
54°
47°
15
55°
48°
16
54°
48°
17
54°
48°
18
55°
47°
19
54°
47°
20
60°
48°
21
60°
47°
22
59°
49°
23
60°
51°
24
61°
49°
25
62°
50°
26
62°
48°
27
61°
48°
28
61°
52°
29
60°
51°
30
61°
50°
31
62°
52°
1
61°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Sunnyside
Sunnyside's July 2026 forecast shows daily high temperatures ranging from 53° to 62°, with overnight lows between 44° and 52°. The average high for July is 57° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Sunnyside. See also: August | September | October.