S
M
T
W
T
F
S
26
69°
38°
27
58°
36°
28
54°
37°
29
58°
44°
30
57°
42°
1
57°
39°
2
58°
37°
3
61°
46°
4
66°
48°
5
69°
49°
6
68°
45°
7
63°
42°
8
64°
47°
9
66°
47°
10
70°
51°
11
70°
52°
12
72°
53°
13
71°
49°
14
66°
45°
15
65°
43°
16
66°
47°
17
67°
44°
18
66°
46°
19
68°
44°
20
70°
50°
21
71°
54°
22
74°
53°
23
76°
45°
24
70°
44°
25
67°
44°
26
67°
45°
27
68°
45°
28
68°
52°
29
75°
51°
30
75°
53°
31
74°
54°
1
77°
57°
2
74°
52°
3
70°
48°
4
71°
49°
5
78°
56°
6
77°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Alliance
Alliance's May 2026 forecast shows daily high temperatures ranging from 54° to 78°, with overnight lows between 36° and 59°. The average high for May is 68° with an average low of 47°. 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 Alliance. See also: June | July | August.