S
M
T
W
T
F
S
26
85°
55°
27
86°
56°
28
86°
56°
29
82°
57°
30
81°
55°
31
86°
58°
1
86°
57°
2
87°
58°
3
87°
58°
4
86°
57°
5
87°
58°
6
87°
58°
7
88°
59°
8
88°
57°
9
78°
52°
10
76°
52°
11
76°
50°
12
77°
50°
13
77°
51°
14
81°
54°
15
83°
53°
16
80°
52°
17
77°
46°
18
79°
46°
19
82°
49°
20
84°
48°
21
83°
49°
22
82°
52°
23
85°
50°
24
75°
53°
25
81°
48°
26
75°
41°
27
73°
43°
28
73°
44°
29
74°
45°
30
71°
42°
31
73°
47°
1
75°
50°
2
81°
46°
3
83°
50°
4
81°
41°
5
71°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cle Elum
Cle Elum's August 2026 forecast shows daily high temperatures ranging from 71° to 88°, with overnight lows between 41° and 59°. The average high for August is 81° 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 Cle Elum. See also: September | October | November.