S
M
T
W
T
F
S
26
69°
47°
27
67°
48°
28
60°
43°
29
65°
41°
30
65°
42°
1
70°
45°
2
68°
47°
3
70°
46°
4
70°
51°
5
71°
50°
6
70°
44°
7
71°
49°
8
71°
53°
9
73°
54°
10
77°
53°
11
74°
55°
12
77°
56°
13
78°
52°
14
69°
48°
15
71°
48°
16
75°
55°
17
79°
57°
18
77°
53°
19
75°
46°
20
68°
46°
21
70°
49°
22
72°
54°
23
75°
55°
24
80°
58°
25
82°
59°
26
82°
59°
27
78°
58°
28
73°
59°
29
76°
60°
30
81°
59°
31
78°
54°
1
82°
53°
2
78°
56°
3
77°
54°
4
78°
53°
5
79°
55°
6
81°
54°
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 60° to 82°, with overnight lows between 41° and 60°. The average high for May is 74° with an average low of 52°. 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.