S
M
T
W
T
F
S
28
100°
77°
29
100°
75°
30
99°
77°
1
99°
75°
2
99°
75°
3
100°
75°
4
100°
77°
5
99°
77°
6
100°
73°
7
99°
75°
8
99°
72°
9
99°
72°
10
95°
72°
11
90°
76°
12
94°
76°
13
92°
75°
14
86°
76°
15
80°
73°
16
85°
74°
17
90°
72°
18
92°
75°
19
96°
73°
20
98°
75°
21
103°
78°
22
104°
77°
23
105°
79°
24
100°
74°
25
100°
78°
26
101°
77°
27
101°
77°
28
101°
78°
29
100°
78°
30
101°
77°
31
101°
78°
1
100°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Chula Vista
Chula Vista's July 2026 forecast shows daily high temperatures ranging from 80° to 105°, with overnight lows between 72° and 79°. The average high for July is 96° with an average low of 76°. 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 Chula Vista. See also: August | September | October.
