S
M
T
W
T
F
S
26
49°
38°
27
50°
38°
28
49°
36°
29
51°
40°
30
50°
39°
1
55°
38°
2
53°
41°
3
50°
40°
4
50°
39°
5
54°
38°
6
56°
44°
7
56°
44°
8
54°
42°
9
58°
44°
10
57°
36°
11
51°
35°
12
52°
36°
13
52°
37°
14
53°
36°
15
55°
41°
16
58°
42°
17
59°
44°
18
62°
40°
19
55°
40°
20
57°
43°
21
61°
48°
22
63°
50°
23
65°
51°
24
64°
47°
25
59°
44°
26
63°
51°
27
67°
50°
28
65°
46°
29
67°
50°
30
66°
49°
31
61°
46°
1
66°
43°
2
68°
48°
3
71°
53°
4
72°
54°
5
73°
54°
6
68°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Port McNicoll
Port McNicoll's May 2026 forecast shows daily high temperatures ranging from 49° to 73°, with overnight lows between 35° and 54°. The average high for May is 59° 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 Port McNicoll. See also: June | July | August.
