S
M
T
W
T
F
S
28
74°
44°
29
75°
45°
30
77°
46°
1
76°
45°
2
76°
43°
3
74°
44°
4
76°
46°
5
77°
50°
6
77°
47°
7
78°
46°
8
77°
43°
9
74°
44°
10
74°
45°
11
75°
49°
12
76°
54°
13
81°
53°
14
81°
53°
15
82°
54°
16
82°
55°
17
81°
50°
18
77°
48°
19
78°
46°
20
80°
45°
21
78°
50°
22
77°
54°
23
76°
54°
24
75°
49°
25
76°
52°
26
80°
52°
27
83°
50°
28
83°
52°
29
82°
53°
30
82°
55°
31
81°
55°
1
82°
54°
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 74° to 83°, with overnight lows between 43° and 55°. The average high for July is 78° 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 July weather will actually feel in Mammoth Lakes. See also: August | September | October.