S
M
T
W
T
F
S
26
34°
25°
27
34°
27°
28
32°
23°
29
36°
27°
30
32°
23°
1
36°
23°
2
46°
27°
3
46°
32°
4
41°
30°
5
41°
27°
6
28°
21°
7
43°
23°
8
54°
34°
9
52°
36°
10
52°
32°
11
61°
39°
12
68°
45°
13
64°
41°
14
63°
41°
15
63°
39°
16
59°
37°
17
43°
28°
18
32°
25°
19
36°
23°
20
45°
27°
21
52°
28°
22
43°
27°
23
58°
33°
24
66°
36°
25
62°
41°
26
58°
37°
27
60°
37°
28
66°
39°
29
65°
36°
30
64°
35°
31
59°
36°
1
65°
39°
2
69°
42°
3
69°
41°
4
66°
43°
5
67°
32°
6
63°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Ruby
Ruby's May 2026 forecast shows daily high temperatures ranging from 58° to 69°, with overnight lows between 30° and 43°. The average high for May is 64° with an average low of 37°. 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 Ruby. See also: June | July | August.