S
M
T
W
T
F
S
26
68°
48°
27
72°
52°
28
67°
53°
29
62°
45°
30
N/A
1
53°
36°
2
52°
38°
3
62°
50°
4
70°
55°
5
63°
41°
6
57°
41°
7
54°
37°
8
62°
47°
9
69°
48°
10
65°
47°
11
65°
48°
12
68°
51°
13
67°
49°
14
71°
56°
15
71°
53°
16
67°
51°
17
71°
57°
18
77°
58°
19
77°
59°
20
76°
59°
21
78°
58°
22
76°
60°
23
75°
56°
24
71°
52°
25
71°
58°
26
77°
61°
27
76°
58°
28
72°
59°
29
72°
55°
30
73°
57°
31
77°
61°
1
73°
58°
2
78°
62°
3
77°
56°
4
73°
54°
5
73°
54°
6
74°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in The Portage
The Portage's May 2026 forecast shows daily high temperatures ranging from 52° to 78°, with overnight lows between 36° and 62°. The average high for May is 70° with an average low of 53°. 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 The Portage. See also: June | July | August.