S
M
T
W
T
F
S
26
84°
61°
27
84°
62°
28
76°
62°
29
81°
60°
30
67°
53°
1
68°
46°
2
69°
49°
3
69°
40°
4
80°
47°
5
77°
54°
6
72°
57°
7
70°
51°
8
72°
47°
9
75°
54°
10
82°
55°
11
78°
53°
12
79°
51°
13
82°
53°
14
75°
50°
15
81°
46°
16
85°
60°
17
92°
61°
18
90°
64°
19
90°
71°
20
91°
70°
21
80°
69°
22
78°
67°
23
85°
67°
24
76°
66°
25
79°
70°
26
80°
69°
27
81°
70°
28
85°
70°
29
81°
68°
30
75°
61°
31
77°
60°
1
78°
59°
2
79°
56°
3
80°
61°
4
80°
64°
5
82°
64°
6
85°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rainbow Mountain Heights
Rainbow Mountain Heights's May 2026 forecast shows daily high temperatures ranging from 75° to 85°, with overnight lows between 56° and 70°. The average high for May is 80° with an average low of 64°. 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 Mountain Heights. See also: June | July | August.