S
M
T
W
T
F
S
26
70°
45°
27
64°
51°
28
62°
46°
29
54°
37°
30
55°
29°
1
51°
31°
2
62°
31°
3
72°
45°
4
77°
44°
5
55°
39°
6
49°
31°
7
58°
28°
8
71°
31°
9
64°
38°
10
62°
32°
11
62°
29°
12
78°
43°
13
64°
34°
14
71°
52°
15
78°
55°
16
80°
50°
17
70°
62°
18
76°
54°
19
63°
43°
20
61°
48°
21
62°
46°
22
66°
50°
23
68°
48°
24
71°
52°
25
73°
56°
26
72°
50°
27
66°
55°
28
68°
54°
29
67°
51°
30
66°
50°
31
68°
50°
1
68°
47°
2
69°
48°
3
68°
52°
4
71°
59°
5
79°
60°
6
78°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mauston
Mauston's May 2026 forecast shows daily high temperatures ranging from 61° to 80°, with overnight lows between 34° and 62°. The average high for May is 70° with an average low of 51°. 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 Mauston. See also: June | July | August.