S
M
T
W
T
F
S
28
72°
61°
29
73°
59°
30
74°
60°
1
77°
60°
2
79°
59°
3
78°
60°
4
80°
61°
5
81°
62°
6
80°
64°
7
81°
61°
8
82°
63°
9
85°
64°
10
82°
64°
11
82°
66°
12
84°
66°
13
85°
65°
14
86°
67°
15
86°
67°
16
87°
66°
17
86°
67°
18
86°
67°
19
85°
66°
20
86°
67°
21
85°
66°
22
82°
65°
23
81°
63°
24
81°
63°
25
82°
64°
26
81°
65°
27
84°
66°
28
87°
67°
29
87°
68°
30
86°
68°
31
87°
67°
1
85°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in La Mesa
La Mesa's July 2026 forecast shows daily high temperatures ranging from 72° to 87°, with overnight lows between 59° and 68°. The average high for July is 82° with an average low of 64°. 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 La Mesa. See also: August | September | October.
