S
M
T
W
T
F
S
26
87°
63°
27
88°
72°
28
87°
73°
29
77°
63°
30
66°
57°
1
58°
54°
2
73°
50°
3
80°
46°
4
80°
56°
5
80°
64°
6
80°
54°
7
73°
52°
8
75°
57°
9
73°
62°
10
83°
66°
11
75°
59°
12
81°
52°
13
85°
53°
14
85°
59°
15
90°
62°
16
86°
70°
17
88°
68°
18
88°
75°
19
88°
66°
20
80°
66°
21
78°
69°
22
86°
69°
23
78°
67°
24
85°
65°
25
86°
67°
26
87°
67°
27
86°
68°
28
78°
68°
29
86°
68°
30
92°
72°
31
93°
72°
1
92°
70°
2
88°
67°
3
85°
69°
4
85°
70°
5
83°
67°
6
88°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Vernon
Vernon's May 2026 forecast shows daily high temperatures ranging from 78° to 93°, with overnight lows between 67° and 72°. The average high for May is 87° with an average low of 69°. 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 Vernon. See also: June | July | August.