S
M
T
W
T
F
S
26
48°
34°
27
44°
32°
28
53°
28°
29
58°
27°
30
62°
27°
1
63°
28°
2
68°
26°
3
71°
31°
4
62°
37°
5
60°
29°
6
67°
32°
7
74°
43°
8
78°
41°
9
74°
40°
10
83°
47°
11
84°
47°
12
84°
47°
13
78°
44°
14
76°
46°
15
75°
43°
16
71°
40°
17
70°
40°
18
70°
40°
19
65°
38°
20
70°
39°
21
64°
43°
22
64°
42°
23
65°
42°
24
65°
44°
25
71°
46°
26
76°
46°
27
76°
47°
28
75°
46°
29
76°
47°
30
77°
48°
31
78°
48°
1
79°
49°
2
80°
50°
3
80°
48°
4
77°
49°
5
70°
49°
6
69°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in McGill
McGill's May 2026 forecast shows daily high temperatures ranging from 64° to 84°, with overnight lows between 38° and 50°. The average high for May is 74° 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 McGill. See also: June | July | August.
