S
M
T
W
T
F
S
26
89°
60°
27
84°
63°
28
93°
53°
29
88°
62°
30
89°
70°
1
89°
64°
2
75°
55°
3
80°
51°
4
85°
48°
5
87°
54°
6
90°
58°
7
88°
61°
8
91°
68°
9
82°
64°
10
91°
66°
11
92°
67°
12
78°
70°
13
87°
66°
14
89°
63°
15
91°
52°
16
96°
59°
17
94°
68°
18
94°
66°
19
95°
68°
20
93°
66°
21
93°
68°
22
93°
71°
23
88°
72°
24
87°
73°
25
89°
74°
26
89°
72°
27
88°
73°
28
81°
73°
29
81°
72°
30
82°
71°
31
83°
70°
1
84°
68°
2
84°
65°
3
85°
68°
4
84°
66°
5
83°
68°
6
82°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Vista
Vista's May 2026 forecast shows daily high temperatures ranging from 81° to 89°, with overnight lows between 65° and 74°. The average high for May is 85° with an average low of 70°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Vista. See also: June | July | August.
