S
M
T
W
T
F
S
26
63°
45°
27
64°
41°
28
57°
43°
29
66°
36°
30
70°
41°
1
N/A
2
59°
45°
3
52°
42°
4
56°
39°
5
51°
37°
6
52°
35°
7
51°
39°
8
55°
41°
9
56°
40°
10
55°
41°
11
56°
43°
12
57°
43°
13
56°
44°
14
54°
40°
15
54°
46°
16
59°
45°
17
56°
45°
18
56°
44°
19
55°
46°
20
55°
46°
21
56°
44°
22
55°
43°
23
55°
42°
24
56°
42°
25
55°
41°
26
55°
41°
27
57°
46°
28
56°
47°
29
58°
44°
30
56°
42°
31
55°
42°
1
55°
43°
2
56°
43°
3
55°
44°
4
56°
43°
5
56°
43°
6
57°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Cumbernauld
Cumbernauld's May 2026 forecast shows daily high temperatures ranging from 51° to 59°, with overnight lows between 35° and 47°. The average high for May is 55° with an average low of 43°. 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 Cumbernauld. See also: June | July | August.