S
M
T
W
T
F
S
26
63°
37°
27
71°
34°
28
69°
45°
29
52°
41°
30
55°
23°
1
51°
23°
2
48°
21°
3
62°
20°
4
72°
48°
5
66°
47°
6
55°
40°
7
53°
38°
8
54°
46°
9
62°
47°
10
58°
39°
11
51°
34°
12
51°
42°
13
55°
43°
14
58°
44°
15
65°
45°
16
61°
42°
17
59°
43°
18
61°
46°
19
65°
47°
20
58°
41°
21
59°
42°
22
59°
43°
23
60°
45°
24
61°
44°
25
65°
49°
26
65°
47°
27
62°
44°
28
67°
50°
29
64°
50°
30
71°
52°
31
72°
54°
1
72°
53°
2
68°
52°
3
71°
54°
4
74°
55°
5
74°
57°
6
73°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Colborne
Colborne's May 2026 forecast shows daily high temperatures ranging from 51° to 74°, with overnight lows between 34° and 57°. The average high for May is 63° 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 Colborne. See also: June | July | August.