S
M
T
W
T
F
S
26
74°
54°
27
66°
52°
28
72°
45°
29
74°
58°
30
72°
56°
1
67°
52°
2
62°
52°
3
70°
46°
4
74°
49°
5
77°
57°
6
79°
67°
7
74°
59°
8
71°
52°
9
75°
59°
10
77°
66°
11
77°
57°
12
69°
52°
13
77°
57°
14
82°
59°
15
72°
48°
16
78°
59°
17
82°
66°
18
83°
71°
19
84°
65°
20
83°
68°
21
84°
68°
22
81°
72°
23
82°
72°
24
82°
71°
25
80°
72°
26
81°
73°
27
82°
71°
28
81°
70°
29
81°
68°
30
80°
66°
31
79°
67°
1
82°
66°
2
83°
70°
3
82°
69°
4
79°
70°
5
79°
69°
6
80°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Supply
Supply's May 2026 forecast shows daily high temperatures ranging from 79° to 84°, with overnight lows between 65° and 73°. The average high for May is 81° with an average low of 69°. 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 Supply. See also: June | July | August.