S
M
T
W
T
F
S
26
55°
35°
27
61°
42°
28
61°
44°
29
49°
37°
30
44°
32°
1
44°
29°
2
55°
25°
3
71°
42°
4
76°
39°
5
56°
35°
6
48°
35°
7
51°
33°
8
64°
36°
9
62°
39°
10
52°
33°
11
50°
29°
12
68°
34°
13
61°
38°
14
65°
34°
15
76°
51°
16
85°
54°
17
52°
44°
18
75°
48°
19
74°
52°
20
55°
41°
21
53°
33°
22
58°
45°
23
58°
49°
24
69°
50°
25
81°
54°
26
86°
56°
27
70°
48°
28
64°
49°
29
78°
51°
30
64°
51°
31
71°
54°
1
71°
52°
2
72°
55°
3
71°
57°
4
72°
58°
5
73°
58°
6
71°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Marinette
Marinette's May 2026 forecast shows daily high temperatures ranging from 64° to 86°, with overnight lows between 48° and 59°. The average high for May is 72° 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 Marinette. See also: June | July | August.