S
M
T
W
T
F
S
26
82°
53°
27
83°
54°
28
84°
57°
29
82°
61°
30
83°
52°
31
78°
53°
1
78°
52°
2
77°
56°
3
78°
52°
4
78°
58°
5
79°
56°
6
82°
52°
7
80°
54°
8
82°
53°
9
83°
55°
10
81°
57°
11
79°
61°
12
75°
53°
13
78°
56°
14
82°
59°
15
79°
60°
16
78°
61°
17
76°
57°
18
77°
52°
19
77°
53°
20
79°
61°
21
78°
56°
22
77°
53°
23
84°
59°
24
79°
55°
25
Hist. Avg.
81°
53°
26
Hist. Avg.
81°
53°
27
Hist. Avg.
81°
52°
28
Hist. Avg.
80°
52°
29
Hist. Avg.
80°
52°
30
Hist. Avg.
80°
52°
31
Hist. Avg.
80°
52°
1
Hist. Avg.
80°
52°
2
Hist. Avg.
80°
52°
3
Hist. Avg.
79°
52°
4
Hist. Avg.
79°
51°
5
Hist. Avg.
79°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Happy Valley
Happy Valley's August 2026 forecast shows daily high temperatures ranging from 75° to 84°, with overnight lows between 52° and 61°. The average high for August is 80° 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 Happy Valley. See also: September | October | November.