S
M
T
W
T
F
S
28
66°
41°
29
64°
34°
30
73°
36°
1
73°
37°
2
77°
46°
3
81°
41°
4
82°
39°
5
75°
50°
6
81°
48°
7
84°
50°
8
86°
41°
9
86°
34°
10
88°
43°
11
88°
43°
12
82°
54°
13
75°
59°
14
75°
50°
15
80°
51°
16
81°
50°
17
80°
49°
18
81°
51°
19
80°
56°
20
76°
55°
21
78°
53°
22
77°
53°
23
75°
51°
24
78°
51°
25
77°
49°
26
78°
51°
27
79°
51°
28
80°
50°
29
81°
52°
30
77°
50°
31
75°
52°
1
76°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Mammoth Lakes
Mammoth Lakes's July 2026 forecast shows daily high temperatures ranging from 75° to 81°, with overnight lows between 49° and 56°. The average high for July is 78° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Mammoth Lakes. See also: August | September | October.