S
M
T
W
T
F
S
26
85°
59°
27
85°
60°
28
84°
61°
29
86°
61°
30
83°
58°
31
77°
56°
1
77°
54°
2
79°
57°
3
82°
60°
4
82°
59°
5
85°
61°
6
84°
61°
7
83°
61°
8
86°
54°
9
78°
54°
10
84°
56°
11
85°
59°
12
84°
57°
13
79°
57°
14
80°
54°
15
80°
55°
16
82°
52°
17
79°
53°
18
80°
56°
19
81°
51°
20
78°
52°
21
78°
57°
22
77°
60°
23
78°
59°
24
77°
53°
25
76°
54°
26
77°
57°
27
81°
59°
28
85°
56°
29
84°
57°
30
83°
55°
31
84°
58°
1
85°
59°
2
84°
59°
3
84°
54°
4
83°
55°
5
81°
59°
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 76° to 86°, with overnight lows between 51° and 61°. The average high for August is 82° 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.