S
M
T
W
T
F
S
26
91°
59°
27
92°
61°
28
94°
64°
29
97°
63°
30
98°
64°
31
98°
65°
1
97°
64°
2
97°
64°
3
96°
63°
4
95°
63°
5
93°
62°
6
94°
62°
7
94°
61°
8
92°
61°
9
94°
60°
10
93°
61°
11
93°
60°
12
96°
61°
13
96°
60°
14
95°
63°
15
97°
64°
16
96°
63°
17
97°
62°
18
97°
62°
19
94°
60°
20
94°
61°
21
95°
60°
22
96°
58°
23
93°
61°
24
96°
61°
25
97°
60°
26
95°
61°
27
95°
60°
28
94°
58°
29
92°
55°
30
89°
55°
31
89°
61°
1
90°
62°
2
95°
62°
3
94°
56°
4
87°
58°
5
88°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Happy Valley
Happy Valley's August 2026 forecast shows daily high temperatures ranging from 87° to 98°, with overnight lows between 55° and 65°. The average high for August is 94° with an average low of 61°. 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 Happy Valley. See also: September | October | November.