S
M
T
W
T
F
S
26
56°
38°
27
59°
49°
28
60°
47°
29
50°
40°
30
54°
38°
1
48°
35°
2
47°
36°
3
50°
43°
4
54°
43°
5
58°
46°
6
55°
44°
7
53°
44°
8
54°
43°
9
53°
45°
10
54°
43°
11
60°
45°
12
63°
49°
13
64°
41°
14
56°
39°
15
57°
39°
16
57°
40°
17
58°
43°
18
61°
50°
19
65°
44°
20
59°
42°
21
59°
42°
22
60°
43°
23
61°
43°
24
64°
52°
25
67°
49°
26
62°
46°
27
62°
44°
28
63°
50°
29
69°
54°
30
73°
52°
31
67°
51°
1
70°
53°
2
74°
56°
3
75°
55°
4
75°
51°
5
65°
49°
6
66°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Toronto
Toronto's May 2026 forecast shows daily high temperatures ranging from 47° to 75°, with overnight lows between 35° and 56°. The average high for May is 61° with an average low of 46°. 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 Toronto. See also: June | July | August.