S
M
T
W
T
F
S
26
49°
38°
27
63°
42°
28
64°
45°
29
51°
41°
30
55°
41°
1
50°
39°
2
50°
38°
3
59°
38°
4
68°
47°
5
65°
46°
6
49°
41°
7
56°
40°
8
58°
41°
9
64°
45°
10
57°
43°
11
54°
44°
12
51°
40°
13
61°
44°
14
52°
44°
15
60°
49°
16
71°
56°
17
67°
50°
18
71°
60°
19
74°
54°
20
62°
45°
21
58°
44°
22
62°
45°
23
61°
49°
24
58°
48°
25
65°
49°
26
64°
59°
27
65°
53°
28
66°
54°
29
68°
56°
30
73°
53°
31
66°
50°
1
66°
47°
2
65°
47°
3
67°
48°
4
68°
52°
5
72°
58°
6
77°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Thorold
Thorold's May 2026 forecast shows daily high temperatures ranging from 52° to 77°, with overnight lows between 44° and 60°. The average high for May is 66° with an average low of 51°. 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 Thorold. See also: June | July | August.
