S
M
T
W
T
F
S
26
42°
35°
27
45°
35°
28
58°
40°
29
48°
31°
30
45°
27°
1
49°
22°
2
66°
23°
3
69°
30°
4
61°
40°
5
46°
33°
6
45°
30°
7
54°
30°
8
68°
24°
9
58°
37°
10
53°
32°
11
49°
23°
12
51°
36°
13
69°
35°
14
55°
30°
15
85°
35°
16
76°
43°
17
45°
38°
18
55°
38°
19
56°
38°
20
60°
38°
21
51°
36°
22
44°
38°
23
46°
38°
24
73°
33°
25
84°
38°
26
73°
48°
27
60°
39°
28
60°
40°
29
85°
48°
30
57°
40°
31
65°
44°
1
70°
46°
2
81°
48°
3
72°
51°
4
75°
54°
5
72°
49°
6
69°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in South Superior
South Superior's May 2026 forecast shows daily high temperatures ranging from 57° to 85°, with overnight lows between 39° and 54°. The average high for May is 70° 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 South Superior. See also: June | July | August.