S
M
T
W
T
F
S
26
50°
32°
27
48°
36°
28
48°
35°
29
49°
33°
30
48°
32°
1
49°
33°
2
50°
34°
3
50°
33°
4
51°
34°
5
51°
35°
6
52°
34°
7
52°
35°
8
53°
40°
9
52°
38°
10
52°
37°
11
53°
36°
12
55°
37°
13
59°
38°
14
58°
37°
15
59°
39°
16
61°
40°
17
62°
45°
18
63°
43°
19
62°
41°
20
59°
42°
21
63°
40°
22
59°
46°
23
63°
43°
24
57°
47°
25
62°
45°
26
64°
47°
27
65°
42°
28
59°
45°
29
57°
43°
30
58°
42°
31
60°
45°
1
60°
47°
2
61°
49°
3
66°
50°
4
67°
50°
5
68°
52°
6
67°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rainbow
Rainbow's May 2026 forecast shows daily high temperatures ranging from 48° to 68°, with overnight lows between 32° and 52°. The average high for May is 57° with an average low of 41°. 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 Rainbow. See also: June | July | August.
