S
M
T
W
T
F
S
26
68°
32°
27
66°
36°
28
67°
30°
29
53°
37°
30
59°
42°
1
58°
40°
2
57°
34°
3
47°
40°
4
61°
36°
5
77°
38°
6
58°
49°
7
63°
41°
8
57°
33°
9
62°
30°
10
56°
46°
11
64°
45°
12
57°
30°
13
63°
35°
14
67°
42°
15
67°
40°
16
78°
38°
17
78°
44°
18
71°
40°
19
78°
53°
20
84°
39°
21
57°
34°
22
60°
35°
23
63°
40°
24
65°
42°
25
59°
45°
26
61°
45°
27
62°
44°
28
70°
49°
29
69°
46°
30
72°
48°
31
69°
49°
1
72°
43°
2
64°
46°
3
63°
45°
4
64°
48°
5
64°
49°
6
65°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in South Portage
South Portage's May 2026 forecast shows daily high temperatures ranging from 57° to 84°, with overnight lows between 34° and 53°. The average high for May is 66° with an average low of 45°. 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 South Portage. See also: June | July | August.
