S
M
T
W
T
F
S
28
54°
45°
29
53°
46°
30
53°
45°
1
54°
45°
2
53°
46°
3
54°
46°
4
53°
47°
5
52°
47°
6
54°
46°
7
53°
47°
8
54°
49°
9
53°
47°
10
53°
46°
11
54°
47°
12
55°
46°
13
58°
47°
14
56°
48°
15
55°
47°
16
54°
48°
17
54°
50°
18
55°
49°
19
55°
47°
20
56°
47°
21
55°
48°
22
56°
49°
23
55°
50°
24
57°
49°
25
56°
48°
26
56°
49°
27
60°
48°
28
61°
51°
29
60°
49°
30
56°
50°
31
55°
50°
1
56°
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 51°. The average high for July is 55° 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.