S
M
T
W
T
F
S
28
55°
47°
29
55°
45°
30
53°
44°
1
56°
51°
2
53°
49°
3
60°
48°
4
59°
50°
5
58°
52°
6
55°
46°
7
59°
48°
8
54°
47°
9
53°
47°
10
53°
48°
11
54°
48°
12
54°
46°
13
55°
46°
14
54°
47°
15
53°
47°
16
54°
48°
17
55°
47°
18
54°
48°
19
55°
47°
20
55°
47°
21
56°
48°
22
55°
47°
23
55°
47°
24
56°
48°
25
56°
48°
26
55°
49°
27
55°
48°
28
56°
48°
29
55°
50°
30
55°
48°
31
56°
48°
1
55°
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 53° to 60°, with overnight lows between 44° and 52°. 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.