S
M
T
W
T
F
S
28
90°
73°
29
90°
70°
30
88°
71°
1
89°
70°
2
90°
71°
3
90°
71°
4
89°
72°
5
89°
71°
6
91°
71°
7
91°
72°
8
90°
71°
9
90°
71°
10
89°
72°
11
90°
72°
12
89°
71°
13
88°
71°
14
89°
72°
15
89°
71°
16
90°
71°
17
91°
72°
18
91°
71°
19
92°
71°
20
92°
72°
21
91°
73°
22
91°
72°
23
90°
72°
24
91°
74°
25
92°
74°
26
92°
73°
27
91°
73°
28
90°
74°
29
90°
73°
30
89°
74°
31
90°
73°
1
91°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Umatilla
Umatilla's July 2026 forecast shows daily high temperatures ranging from 88° to 92°, with overnight lows between 70° and 74°. The average high for July is 90° with an average low of 72°. 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 Umatilla. See also: August | September | October.