S
M
T
W
T
F
S
28
71°
62°
29
73°
63°
30
74°
64°
1
74°
64°
2
76°
63°
3
81°
64°
4
85°
62°
5
80°
61°
6
79°
62°
7
77°
61°
8
80°
62°
9
79°
62°
10
78°
63°
11
79°
64°
12
78°
67°
13
82°
66°
14
83°
68°
15
83°
66°
16
84°
66°
17
85°
67°
18
81°
64°
19
82°
65°
20
81°
65°
21
82°
66°
22
83°
66°
23
83°
67°
24
84°
67°
25
84°
66°
26
83°
67°
27
83°
67°
28
82°
66°
29
83°
66°
30
84°
67°
31
83°
66°
1
82°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Vista
Vista's July 2026 forecast shows daily high temperatures ranging from 77° to 85°, with overnight lows between 61° and 68°. The average high for July is 82° with an average low of 65°. 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 Vista. See also: August | September | October.