S
M
T
W
T
F
S
26
67°
54°
27
68°
52°
28
70°
46°
29
72°
48°
30
70°
52°
1
72°
56°
2
72°
61°
3
70°
59°
4
69°
56°
5
68°
56°
6
71°
49°
7
72°
53°
8
76°
61°
9
76°
62°
10
74°
59°
11
77°
56°
12
67°
62°
13
75°
58°
14
72°
56°
15
73°
62°
16
72°
61°
17
71°
58°
18
71°
59°
19
80°
51°
20
81°
53°
21
77°
60°
22
72°
62°
23
72°
61°
24
71°
62°
25
71°
60°
26
68°
61°
27
69°
56°
28
70°
51°
29
71°
56°
30
73°
53°
31
77°
57°
1
75°
62°
2
73°
60°
3
74°
63°
4
75°
59°
5
74°
62°
6
76°
63°
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 ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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.