S
M
T
W
T
F
S
26
79°
52°
27
79°
41°
28
81°
43°
29
77°
50°
30
73°
52°
1
73°
50°
2
72°
50°
3
79°
54°
4
81°
52°
5
76°
44°
6
77°
43°
7
80°
46°
8
87°
54°
9
93°
52°
10
92°
51°
11
93°
53°
12
98°
55°
13
97°
55°
14
96°
54°
15
95°
55°
16
93°
54°
17
88°
48°
18
89°
53°
19
90°
53°
20
90°
52°
21
91°
53°
22
83°
52°
23
88°
54°
24
91°
54°
25
90°
53°
26
88°
55°
27
90°
54°
28
87°
54°
29
85°
53°
30
87°
54°
31
86°
55°
1
86°
54°
2
87°
55°
3
87°
56°
4
88°
53°
5
88°
56°
6
90°
57°
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 76° to 98°, with overnight lows between 43° and 57°. The average high for May is 88° with an average low of 53°. 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.
