S
M
T
W
T
F
S
26
84°
65°
27
84°
67°
28
83°
68°
29
81°
65°
30
85°
61°
31
87°
63°
1
78°
67°
2
76°
67°
3
80°
62°
4
82°
59°
5
85°
60°
6
86°
70°
7
84°
68°
8
87°
68°
9
85°
57°
10
85°
68°
11
77°
64°
12
75°
63°
13
80°
63°
14
83°
70°
15
N/A
16
81°
67°
17
80°
62°
18
82°
66°
19
75°
62°
20
79°
59°
21
78°
62°
22
80°
59°
23
77°
60°
24
81°
62°
25
80°
65°
26
83°
62°
27
81°
64°
28
80°
64°
29
81°
62°
30
82°
65°
31
75°
60°
1
76°
64°
2
75°
64°
3
75°
60°
4
74°
57°
5
75°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Oregon
Oregon's August 2026 forecast shows daily high temperatures ranging from 74° to 83°, with overnight lows between 57° and 67°. The average high for August is 79° with an average low of 62°. 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 Oregon. See also: September | October | November.