S
M
T
W
T
F
S
26
79°
57°
27
82°
54°
28
61°
50°
29
63°
43°
30
66°
39°
1
64°
37°
2
63°
41°
3
81°
45°
4
84°
55°
5
60°
46°
6
56°
40°
7
68°
45°
8
76°
49°
9
78°
57°
10
72°
49°
11
75°
55°
12
76°
56°
13
79°
58°
14
79°
54°
15
78°
59°
16
83°
61°
17
77°
55°
18
78°
60°
19
79°
55°
20
74°
56°
21
77°
52°
22
71°
51°
23
73°
52°
24
73°
54°
25
72°
53°
26
73°
53°
27
75°
54°
28
75°
58°
29
76°
60°
30
77°
63°
31
76°
60°
1
76°
56°
2
77°
57°
3
78°
64°
4
80°
65°
5
80°
66°
6
79°
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 56° to 84°, with overnight lows between 40° and 66°. The average high for May is 75° with an average low of 56°. 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.
