S
M
T
W
T
F
S
26
58°
31°
27
66°
35°
28
57°
49°
29
52°
41°
30
53°
41°
1
49°
33°
2
47°
30°
3
52°
44°
4
66°
51°
5
58°
38°
6
50°
36°
7
48°
35°
8
49°
37°
9
51°
39°
10
54°
40°
11
57°
39°
12
56°
40°
13
56°
42°
14
57°
44°
15
59°
43°
16
67°
49°
17
66°
48°
18
67°
46°
19
62°
44°
20
65°
47°
21
67°
47°
22
61°
41°
23
58°
40°
24
59°
41°
25
59°
41°
26
60°
42°
27
61°
41°
28
61°
41°
29
62°
42°
30
63°
45°
31
64°
46°
1
63°
45°
2
64°
46°
3
68°
52°
4
67°
48°
5
67°
53°
6
73°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Port Perry
Port Perry's May 2026 forecast shows daily high temperatures ranging from 47° to 73°, with overnight lows between 30° and 54°. The average high for May is 60° with an average low of 43°. 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 Port Perry. See also: June | July | August.