S
M
T
W
T
F
S
26
77°
57°
27
76°
55°
28
75°
57°
29
78°
56°
30
79°
57°
31
78°
58°
1
79°
57°
2
79°
57°
3
78°
58°
4
79°
58°
5
77°
57°
6
76°
55°
7
74°
56°
8
77°
57°
9
78°
56°
10
78°
56°
11
77°
54°
12
71°
53°
13
71°
54°
14
72°
51°
15
72°
54°
16
75°
53°
17
73°
52°
18
74°
53°
19
72°
52°
20
75°
54°
21
76°
57°
22
77°
56°
23
77°
56°
24
76°
55°
25
76°
54°
26
75°
53°
27
75°
51°
28
76°
50°
29
77°
50°
30
76°
48°
31
74°
49°
1
75°
52°
2
77°
55°
3
77°
52°
4
76°
48°
5
76°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mount Lemmon Ski Valley
Mount Lemmon Ski Valley's August 2026 forecast shows daily high temperatures ranging from 71° to 79°, with overnight lows between 48° and 58°. The average high for August is 76° with an average low of 54°. 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 Mount Lemmon Ski Valley. See also: September | October | November.