S
M
T
W
T
F
S
26
77°
61°
27
78°
65°
28
75°
66°
29
76°
63°
30
80°
60°
31
82°
67°
1
77°
66°
2
71°
60°
3
76°
60°
4
79°
66°
5
79°
67°
6
80°
64°
7
78°
62°
8
80°
62°
9
74°
65°
10
76°
62°
11
76°
63°
12
73°
54°
13
80°
59°
14
80°
56°
15
72°
52°
16
71°
53°
17
71°
58°
18
72°
57°
19
72°
56°
20
73°
54°
21
71°
51°
22
70°
50°
23
69°
50°
24
69°
51°
25
70°
53°
26
70°
52°
27
69°
53°
28
69°
48°
29
70°
50°
30
72°
56°
31
75°
57°
1
72°
57°
2
73°
54°
3
68°
51°
4
68°
51°
5
70°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Beaverton
Beaverton's August 2026 forecast shows daily high temperatures ranging from 68° to 82°, with overnight lows between 48° and 67°. The average high for August is 74° with an average low of 57°. 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 Beaverton. See also: September | October | November.