S
M
T
W
T
F
S
26
47°
41°
27
48°
42°
28
51°
40°
29
49°
38°
30
52°
43°
1
50°
40°
2
50°
42°
3
56°
44°
4
58°
45°
5
60°
44°
6
53°
45°
7
61°
47°
8
62°
46°
9
62°
44°
10
53°
44°
11
53°
45°
12
54°
47°
13
56°
47°
14
55°
46°
15
57°
48°
16
62°
49°
17
64°
48°
18
60°
36°
19
56°
38°
20
56°
38°
21
57°
37°
22
56°
38°
23
57°
40°
24
56°
41°
25
59°
51°
26
66°
40°
27
64°
44°
28
60°
49°
29
60°
44°
30
71°
43°
31
60°
47°
1
65°
42°
2
65°
53°
3
69°
53°
4
72°
44°
5
67°
45°
6
60°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Algoma
Algoma's May 2026 forecast shows daily high temperatures ranging from 47° to 72°, with overnight lows between 36° and 53°. The average high for May is 58° 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 Algoma. See also: June | July | August.