S
M
T
W
T
F
S
28
90°
60°
29
89°
60°
30
88°
59°
1
87°
60°
2
92°
62°
3
93°
61°
4
93°
62°
5
89°
57°
6
83°
54°
7
85°
59°
8
93°
62°
9
94°
63°
10
95°
62°
11
91°
62°
12
92°
63°
13
95°
64°
14
97°
64°
15
89°
58°
16
86°
57°
17
87°
58°
18
95°
64°
19
97°
64°
20
96°
58°
21
87°
62°
22
95°
65°
23
99°
64°
24
100°
65°
25
99°
66°
26
100°
65°
27
99°
61°
28
94°
56°
29
90°
59°
30
92°
57°
31
88°
55°
1
88°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Hermiston
Hermiston's July 2026 forecast shows daily high temperatures ranging from 83° to 100°, with overnight lows between 54° and 66°. The average high for July is 92° with an average low of 61°. 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 Hermiston. See also: August | September | October.
