S
M
T
W
T
F
S
26
71°
42°
27
72°
51°
28
61°
46°
29
55°
42°
30
54°
40°
1
54°
33°
2
61°
32°
3
73°
43°
4
81°
44°
5
58°
40°
6
51°
33°
7
64°
32°
8
71°
39°
9
69°
41°
10
64°
37°
11
64°
37°
12
78°
42°
13
67°
48°
14
72°
42°
15
82°
57°
16
81°
62°
17
81°
65°
18
77°
63°
19
66°
45°
20
62°
46°
21
58°
48°
22
59°
50°
23
66°
51°
24
73°
56°
25
72°
54°
26
74°
58°
27
77°
59°
28
77°
59°
29
78°
58°
30
76°
60°
31
77°
60°
1
74°
54°
2
76°
58°
3
69°
53°
4
69°
53°
5
72°
59°
6
76°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Platteville
Platteville's May 2026 forecast shows daily high temperatures ranging from 58° to 78°, with overnight lows between 45° and 60°. The average high for May is 71° with an average low of 55°. 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 Platteville. See also: June | July | August.
