S
M
T
W
T
F
S
26
88°
59°
27
89°
56°
28
86°
54°
29
85°
56°
30
86°
50°
31
89°
52°
1
88°
54°
2
91°
56°
3
88°
54°
4
89°
50°
5
88°
52°
6
87°
52°
7
88°
54°
8
87°
52°
9
86°
51°
10
84°
51°
11
82°
52°
12
80°
51°
13
75°
49°
14
85°
51°
15
81°
51°
16
80°
50°
17
75°
48°
18
76°
46°
19
75°
45°
20
74°
45°
21
74°
46°
22
75°
43°
23
76°
45°
24
80°
50°
25
80°
48°
26
79°
47°
27
80°
48°
28
81°
49°
29
81°
49°
30
80°
50°
31
80°
49°
1
79°
48°
2
80°
48°
3
76°
46°
4
71°
47°
5
71°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Aspen
Aspen's August 2026 forecast shows daily high temperatures ranging from 71° to 91°, with overnight lows between 43° and 56°. The average high for August is 81° with an average low of 49°. 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 Aspen. See also: September | October | November.