S
M
T
W
T
F
S
26
58°
41°
27
57°
36°
28
64°
36°
29
71°
35°
30
72°
38°
1
75°
42°
2
74°
44°
3
73°
49°
4
61°
46°
5
70°
49°
6
77°
50°
7
83°
46°
8
81°
48°
9
82°
49°
10
85°
50°
11
90°
54°
12
89°
52°
13
90°
51°
14
86°
51°
15
84°
48°
16
83°
50°
17
74°
44°
18
77°
42°
19
74°
48°
20
79°
49°
21
79°
49°
22
78°
48°
23
79°
50°
24
80°
50°
25
81°
51°
26
81°
50°
27
80°
50°
28
78°
49°
29
74°
50°
30
75°
50°
31
77°
51°
1
78°
51°
2
82°
52°
3
83°
52°
4
83°
51°
5
82°
52°
6
80°
47°
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 61° to 90°, with overnight lows between 42° and 54°. The average high for May is 80° with an average low of 49°. 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.
