S
M
T
W
T
F
S
26
65°
48°
27
68°
48°
28
63°
49°
29
70°
47°
30
67°
49°
31
80°
49°
1
58°
45°
2
54°
43°
3
N/A
4
76°
57°
5
81°
56°
6
83°
55°
7
74°
53°
8
78°
44°
9
77°
42°
10
75°
41°
11
76°
43°
12
78°
44°
13
76°
43°
14
75°
43°
15
75°
41°
16
77°
43°
17
75°
40°
18
77°
45°
19
78°
43°
20
77°
41°
21
72°
41°
22
70°
39°
23
74°
43°
24
68°
35°
25
72°
40°
26
76°
43°
27
77°
43°
28
76°
42°
29
73°
42°
30
67°
35°
31
68°
40°
1
65°
38°
2
65°
33°
3
66°
33°
4
69°
38°
5
65°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Leavenworth-Lake Wenatchee
Leavenworth-Lake Wenatchee's August 2026 forecast shows daily high temperatures ranging from 65° to 83°, with overnight lows between 33° and 57°. The average high for August is 74° with an average low of 42°. 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 Leavenworth-Lake Wenatchee. See also: September | October | November.