S
M
T
W
T
F
S
26
54°
44°
27
73°
41°
28
66°
50°
29
54°
45°
30
57°
43°
1
48°
39°
2
50°
38°
3
64°
34°
4
72°
57°
5
63°
45°
6
58°
41°
7
56°
40°
8
64°
45°
9
63°
46°
10
63°
46°
11
62°
44°
12
64°
45°
13
65°
52°
14
63°
50°
15
64°
49°
16
70°
53°
17
72°
51°
18
71°
56°
19
72°
56°
20
73°
53°
21
72°
51°
22
67°
47°
23
65°
47°
24
67°
48°
25
67°
51°
26
68°
49°
27
68°
49°
28
69°
50°
29
69°
51°
30
70°
55°
31
75°
57°
1
70°
53°
2
72°
54°
3
75°
61°
4
76°
60°
5
78°
62°
6
81°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Portage
Portage's May 2026 forecast shows daily high temperatures ranging from 56° to 81°, with overnight lows between 40° and 63°. The average high for May is 68° with an average low of 51°. 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 Portage. See also: June | July | August.
