S
M
T
W
T
F
S
26
63°
39°
27
55°
46°
28
59°
43°
29
48°
37°
30
46°
34°
1
45°
27°
2
59°
27°
3
68°
43°
4
68°
34°
5
51°
33°
6
47°
31°
7
50°
31°
8
59°
35°
9
58°
38°
10
56°
37°
11
58°
42°
12
60°
43°
13
62°
43°
14
60°
44°
15
64°
45°
16
65°
46°
17
66°
52°
18
67°
49°
19
70°
50°
20
67°
48°
21
65°
40°
22
61°
40°
23
62°
42°
24
62°
42°
25
63°
43°
26
63°
43°
27
62°
44°
28
63°
44°
29
65°
52°
30
65°
52°
31
66°
49°
1
71°
52°
2
74°
55°
3
75°
55°
4
76°
56°
5
76°
57°
6
75°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mosinee
Mosinee's May 2026 forecast shows daily high temperatures ranging from 47° to 76°, with overnight lows between 31° and 57°. The average high for May is 64° with an average low of 45°. 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 Mosinee. See also: June | July | August.