S
M
T
W
T
F
S
26
67°
46°
27
62°
46°
28
53°
42°
29
65°
36°
30
63°
37°
1
64°
32°
2
70°
30°
3
80°
49°
4
87°
46°
5
56°
46°
6
62°
42°
7
77°
42°
8
78°
47°
9
82°
39°
10
74°
46°
11
85°
43°
12
85°
51°
13
83°
42°
14
83°
59°
15
95°
54°
16
91°
62°
17
88°
58°
18
60°
50°
19
62°
45°
20
65°
42°
21
66°
47°
22
73°
56°
23
78°
48°
24
85°
62°
25
90°
58°
26
86°
61°
27
83°
60°
28
77°
61°
29
81°
61°
30
80°
59°
31
81°
54°
1
80°
59°
2
79°
56°
3
81°
58°
4
81°
58°
5
85°
59°
6
82°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Superior
Superior's May 2026 forecast shows daily high temperatures ranging from 77° to 90°, with overnight lows between 54° and 62°. The average high for May is 82° with an average low of 59°. 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 Superior. See also: June | July | August.
