S
M
T
W
T
F
S
26
67°
24°
27
72°
27°
28
58°
38°
29
49°
38°
30
48°
24°
1
47°
23°
2
43°
30°
3
51°
40°
4
64°
47°
5
53°
31°
6
49°
29°
7
48°
30°
8
48°
29°
9
50°
30°
10
53°
32°
11
54°
33°
12
54°
35°
13
55°
38°
14
60°
41°
15
58°
39°
16
56°
38°
17
64°
43°
18
64°
42°
19
62°
40°
20
63°
44°
21
64°
38°
22
58°
36°
23
54°
35°
24
55°
35°
25
55°
36°
26
57°
35°
27
58°
36°
28
57°
36°
29
58°
37°
30
61°
42°
31
60°
43°
1
64°
41°
2
61°
42°
3
67°
46°
4
63°
44°
5
67°
48°
6
71°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Algonquin Park
Algonquin Park's May 2026 forecast shows daily high temperatures ranging from 48° to 71°, with overnight lows between 29° and 49°. The average high for May is 58° with an average low of 38°. 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 Algonquin Park. See also: June | July | August.
