S
M
T
W
T
F
S
26
85°
59°
27
85°
63°
28
74°
62°
29
78°
67°
30
79°
64°
31
81°
63°
1
82°
63°
2
78°
67°
3
75°
61°
4
83°
56°
5
86°
63°
6
84°
66°
7
84°
66°
8
82°
66°
9
82°
62°
10
81°
62°
11
80°
61°
12
78°
60°
13
77°
59°
14
76°
56°
15
77°
57°
16
76°
56°
17
75°
58°
18
75°
55°
19
72°
55°
20
77°
54°
21
71°
55°
22
73°
59°
23
76°
58°
24
75°
58°
25
75°
57°
26
78°
57°
27
78°
56°
28
70°
58°
29
77°
58°
30
76°
57°
31
77°
56°
1
69°
53°
2
67°
53°
3
67°
52°
4
69°
50°
5
72°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Les Dalles
Les Dalles's August 2026 forecast shows daily high temperatures ranging from 67° to 86°, with overnight lows between 50° and 66°. The average high for August is 76° with an average low of 58°. 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 Les Dalles. See also: September | October | November.
