S
M
T
W
T
F
S
26
79°
51°
27
81°
52°
28
81°
52°
29
76°
54°
30
76°
52°
31
81°
54°
1
81°
55°
2
82°
56°
3
82°
56°
4
81°
55°
5
81°
56°
6
82°
57°
7
83°
57°
8
83°
55°
9
73°
51°
10
72°
52°
11
72°
49°
12
73°
50°
13
73°
51°
14
77°
54°
15
77°
52°
16
74°
52°
17
73°
47°
18
75°
46°
19
78°
47°
20
79°
49°
21
80°
48°
22
79°
53°
23
80°
52°
24
72°
54°
25
79°
49°
26
72°
44°
27
70°
45°
28
70°
48°
29
71°
49°
30
68°
44°
31
70°
51°
1
75°
53°
2
78°
48°
3
80°
52°
4
77°
44°
5
68°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Maple Valley Heights
Maple Valley Heights's August 2026 forecast shows daily high temperatures ranging from 68° to 83°, with overnight lows between 44° and 57°. The average high for August is 77° with an average low of 51°. 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 Maple Valley Heights. See also: September | October | November.