S
M
T
W
T
F
S
26
82°
63°
27
82°
66°
28
82°
66°
29
81°
65°
30
79°
63°
31
79°
62°
1
80°
64°
2
80°
62°
3
81°
63°
4
82°
66°
5
83°
66°
6
83°
65°
7
82°
66°
8
81°
65°
9
82°
66°
10
82°
66°
11
81°
65°
12
83°
66°
13
81°
66°
14
82°
65°
15
80°
66°
16
82°
66°
17
83°
65°
18
84°
67°
19
84°
67°
20
83°
66°
21
84°
67°
22
84°
67°
23
83°
65°
24
83°
67°
25
86°
66°
26
86°
65°
27
84°
64°
28
84°
66°
29
83°
65°
30
84°
66°
31
84°
66°
1
85°
65°
2
84°
65°
3
84°
67°
4
83°
66°
5
84°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Vista
Vista's August 2026 forecast shows daily high temperatures ranging from 79° to 86°, with overnight lows between 62° and 67°. The average high for August is 83° 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 August weather will actually feel in Vista. See also: September | October | November.
