S
M
T
W
T
F
S
28
53°
46°
29
52°
45°
30
53°
45°
1
53°
46°
2
52°
45°
3
53°
45°
4
54°
46°
5
54°
45°
6
55°
46°
7
53°
46°
8
54°
47°
9
54°
48°
10
53°
49°
11
53°
48°
12
54°
47°
13
53°
47°
14
54°
48°
15
54°
47°
16
55°
48°
17
60°
52°
18
57°
49°
19
60°
48°
20
56°
49°
21
61°
48°
22
60°
51°
23
61°
51°
24
61°
53°
25
60°
52°
26
58°
52°
27
57°
53°
28
58°
49°
29
59°
51°
30
56°
48°
31
56°
48°
1
57°
49°
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 52° to 61°, with overnight lows between 45° and 53°. The average high for July is 56° 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.