S
M
T
W
T
F
S
26
58°
27°
27
45°
36°
28
48°
31°
29
41°
32°
30
44°
26°
1
52°
24°
2
64°
28°
3
69°
35°
4
52°
31°
5
36°
28°
6
38°
24°
7
50°
18°
8
59°
26°
9
50°
34°
10
46°
27°
11
60°
25°
12
51°
32°
13
66°
34°
14
74°
42°
15
76°
53°
16
53°
35°
17
59°
31°
18
53°
37°
19
46°
28°
20
61°
39°
21
68°
44°
22
64°
44°
23
62°
46°
24
71°
52°
25
77°
54°
26
75°
53°
27
73°
54°
28
77°
53°
29
76°
53°
30
76°
52°
31
68°
45°
1
66°
50°
2
63°
49°
3
70°
48°
4
71°
51°
5
69°
51°
6
64°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Frontier
Frontier's May 2026 forecast shows daily high temperatures ranging from 46° to 77°, with overnight lows between 28° and 54°. The average high for May is 68° with an average low of 48°. 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 Frontier. See also: June | July | August.