S
M
T
W
T
F
S
26
52°
39°
27
53°
37°
28
55°
42°
29
54°
39°
30
54°
40°
1
55°
41°
2
55°
37°
3
56°
41°
4
62°
47°
5
66°
45°
6
57°
42°
7
63°
48°
8
69°
50°
9
69°
48°
10
68°
44°
11
58°
44°
12
59°
45°
13
60°
46°
14
60°
48°
15
62°
50°
16
67°
49°
17
63°
50°
18
67°
43°
19
70°
41°
20
63°
41°
21
64°
42°
22
63°
41°
23
64°
42°
24
64°
45°
25
67°
47°
26
67°
51°
27
71°
42°
28
66°
48°
29
67°
53°
30
73°
46°
31
69°
48°
1
67°
52°
2
69°
47°
3
69°
57°
4
73°
54°
5
78°
49°
6
71°
49°
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 78°, with overnight lows between 37° and 57°. The average high for May is 64° 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 Thorold. See also: June | July | August.
