S
M
T
W
T
F
S
26
62°
41°
27
72°
37°
28
71°
40°
29
68°
45°
30
58°
48°
1
64°
41°
2
56°
47°
3
56°
40°
4
71°
40°
5
79°
55°
6
64°
47°
7
60°
39°
8
59°
41°
9
56°
47°
10
67°
53°
11
62°
45°
12
61°
42°
13
62°
46°
14
62°
49°
15
64°
49°
16
64°
50°
17
66°
48°
18
64°
47°
19
72°
51°
20
69°
51°
21
69°
50°
22
70°
51°
23
65°
45°
24
63°
46°
25
65°
46°
26
66°
53°
27
66°
48°
28
67°
48°
29
66°
46°
30
67°
48°
31
68°
54°
1
71°
53°
2
70°
49°
3
69°
54°
4
73°
55°
5
71°
54°
6
70°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Vernon Rockville
Vernon Rockville's May 2026 forecast shows daily high temperatures ranging from 56° to 79°, with overnight lows between 39° and 56°. The average high for May is 66° 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 Vernon Rockville. See also: June | July | August.