S
M
T
W
T
F
S
28
71°
60°
29
72°
61°
30
74°
62°
1
73°
60°
2
74°
58°
3
76°
59°
4
77°
61°
5
75°
62°
6
76°
60°
7
75°
61°
8
77°
60°
9
76°
62°
10
76°
63°
11
77°
61°
12
78°
62°
13
81°
63°
14
85°
69°
15
78°
63°
16
78°
64°
17
79°
63°
18
80°
64°
19
80°
64°
20
79°
65°
21
81°
65°
22
80°
64°
23
80°
64°
24
78°
61°
25
77°
60°
26
75°
60°
27
77°
60°
28
78°
62°
29
79°
64°
30
81°
65°
31
81°
65°
1
80°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Otay Mesa
Otay Mesa's July 2026 forecast shows daily high temperatures ranging from 73° to 85°, with overnight lows between 58° and 69°. The average high for July is 78° with an average low of 63°. 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 Otay Mesa. See also: August | September | October.