S
M
T
W
T
F
S
26
86°
48°
27
86°
45°
28
86°
45°
29
86°
50°
30
88°
43°
31
90°
43°
1
91°
41°
2
90°
48°
3
90°
54°
4
91°
52°
5
90°
52°
6
90°
45°
7
91°
52°
8
88°
54°
9
90°
52°
10
86°
48°
11
82°
48°
12
77°
48°
13
66°
41°
14
75°
36°
15
77°
36°
16
79°
37°
17
79°
43°
18
86°
45°
19
88°
46°
20
86°
41°
21
84°
46°
22
84°
55°
23
84°
46°
24
82°
43°
25
82°
54°
26
82°
50°
27
79°
52°
28
66°
51°
29
71°
44°
30
75°
43°
31
73°
42°
1
71°
42°
2
71°
42°
3
72°
43°
4
73°
42°
5
78°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mammoth Lakes
Mammoth Lakes's August 2026 forecast shows daily high temperatures ranging from 66° to 82°, with overnight lows between 42° and 52°. The average high for August is 74° with an average low of 45°. 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 Mammoth Lakes. See also: September | October | November.
