S
M
T
W
T
F
S
28
66°
41°
29
64°
36°
30
70°
43°
1
72°
43°
2
74°
41°
3
76°
44°
4
79°
50°
5
79°
48°
6
80°
51°
7
79°
48°
8
81°
51°
9
83°
48°
10
81°
48°
11
82°
50°
12
79°
49°
13
77°
52°
14
78°
52°
15
74°
51°
16
74°
49°
17
75°
49°
18
75°
50°
19
77°
50°
20
78°
51°
21
74°
47°
22
74°
48°
23
75°
52°
24
79°
53°
25
77°
51°
26
76°
52°
27
77°
53°
28
78°
52°
29
78°
52°
30
77°
50°
31
78°
51°
1
80°
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 64° to 83°, with overnight lows between 36° and 53°. The average high for July is 77° 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.