S
M
T
W
T
F
S
26
64°
41°
27
57°
47°
28
60°
42°
29
50°
38°
30
47°
33°
1
46°
30°
2
59°
26°
3
69°
45°
4
69°
41°
5
47°
34°
6
48°
34°
7
51°
32°
8
66°
31°
9
60°
39°
10
59°
32°
11
57°
29°
12
74°
39°
13
63°
41°
14
70°
34°
15
81°
51°
16
81°
54°
17
54°
47°
18
78°
50°
19
66°
48°
20
59°
43°
21
62°
37°
22
67°
46°
23
70°
50°
24
76°
54°
25
83°
52°
26
90°
61°
27
83°
56°
28
76°
49°
29
82°
48°
30
73°
46°
31
78°
54°
1
80°
50°
2
79°
51°
3
80°
59°
4
79°
58°
5
79°
55°
6
75°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Wausau
Wausau's May 2026 forecast shows daily high temperatures ranging from 73° to 80°, with overnight lows between 46° and 59°. The average high for May is 78° with an average low of 54°. 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 Wausau. See also: June | July | August.