S
M
T
W
T
F
S
26
70°
46°
27
63°
45°
28
59°
43°
29
55°
36°
30
52°
30°
1
54°
36°
2
64°
30°
3
72°
45°
4
67°
35°
5
52°
32°
6
49°
34°
7
57°
34°
8
64°
38°
9
64°
43°
10
65°
39°
11
64°
47°
12
68°
46°
13
67°
47°
14
65°
47°
15
68°
49°
16
69°
48°
17
68°
45°
18
69°
50°
19
70°
48°
20
67°
47°
21
63°
41°
22
62°
41°
23
63°
42°
24
63°
42°
25
64°
43°
26
64°
43°
27
63°
44°
28
64°
44°
29
66°
53°
30
65°
50°
31
66°
48°
1
71°
53°
2
74°
55°
3
76°
56°
4
77°
57°
5
77°
58°
6
76°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Plum City
Plum City's May 2026 forecast shows daily high temperatures ranging from 49° to 77°, with overnight lows between 32° and 58°. The average high for May is 66° with an average low of 46°. 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 Plum City. See also: June | July | August.
