S
M
T
W
T
F
S
26
89°
62°
27
88°
61°
28
84°
58°
29
79°
57°
30
79°
56°
31
82°
58°
1
88°
61°
2
88°
60°
3
82°
52°
4
81°
53°
5
85°
57°
6
89°
59°
7
82°
55°
8
83°
52°
9
81°
60°
10
88°
61°
11
90°
61°
12
90°
62°
13
91°
61°
14
91°
61°
15
90°
60°
16
90°
57°
17
89°
56°
18
86°
57°
19
80°
53°
20
79°
54°
21
79°
49°
22
78°
47°
23
78°
51°
24
82°
54°
25
86°
56°
26
87°
57°
27
87°
56°
28
88°
58°
29
88°
58°
30
86°
57°
31
86°
57°
1
85°
55°
2
85°
54°
3
84°
53°
4
82°
53°
5
79°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mosier
Mosier's August 2026 forecast shows daily high temperatures ranging from 78° to 91°, with overnight lows between 46° and 62°. The average high for August is 85° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Mosier. See also: September | October | November.
