S
M
T
W
T
F
S
26
63°
38°
27
73°
38°
28
63°
52°
29
60°
46°
30
50°
44°
1
50°
39°
2
49°
31°
3
62°
31°
4
76°
42°
5
68°
43°
6
47°
38°
7
49°
37°
8
53°
41°
9
52°
41°
10
60°
41°
11
52°
35°
12
51°
39°
13
57°
45°
14
60°
46°
15
62°
44°
16
60°
45°
17
62°
45°
18
60°
44°
19
63°
44°
20
69°
49°
21
67°
49°
22
64°
42°
23
60°
40°
24
61°
42°
25
60°
43°
26
62°
43°
27
62°
44°
28
63°
43°
29
62°
43°
30
64°
44°
31
65°
47°
1
64°
46°
2
65°
47°
3
66°
53°
4
68°
51°
5
67°
51°
6
73°
55°
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 47° to 73°, with overnight lows between 35° and 55°. The average high for May is 61° with an average low of 44°. 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.
