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
79°
49°
26
81°
51°
27
76°
51°
28
68°
49°
29
73°
46°
30
75°
46°
31
73°
45°
1
77°
42°
2
76°
46°
3
77°
44°
4
77°
45°
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 68° to 81°, with overnight lows between 42° and 51°. The average high for August is 76° with an average low of 47°. 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.
