S
M
T
W
T
F
S
26
76°
50°
27
79°
46°
28
77°
49°
29
78°
55°
30
86°
53°
31
84°
52°
1
76°
51°
2
78°
54°
3
78°
52°
4
79°
51°
5
77°
53°
6
78°
51°
7
81°
55°
8
84°
53°
9
82°
51°
10
78°
50°
11
83°
52°
12
81°
45°
13
75°
50°
14
76°
54°
15
84°
56°
16
85°
56°
17
86°
54°
18
85°
55°
19
85°
54°
20
84°
55°
21
82°
54°
22
82°
57°
23
83°
54°
24
84°
56°
25
83°
55°
26
83°
52°
27
82°
46°
28
70°
50°
29
73°
46°
30
77°
48°
31
75°
49°
1
Hist. Avg.
76°
47°
2
Hist. Avg.
76°
47°
3
Hist. Avg.
75°
47°
4
Hist. Avg.
75°
46°
5
Hist. Avg.
75°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Wallowa Lake
Wallowa Lake's August 2026 forecast shows daily high temperatures ranging from 70° to 86°, with overnight lows between 45° and 57°. The average high for August is 80° with an average low of 52°. 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 Wallowa Lake. See also: September | October | November.