S
M
T
W
T
F
S
26
60°
39°
27
69°
37°
28
66°
39°
29
64°
41°
30
54°
45°
1
61°
39°
2
57°
43°
3
54°
38°
4
70°
39°
5
77°
49°
6
64°
51°
7
60°
41°
8
57°
43°
9
61°
45°
10
69°
49°
11
58°
45°
12
62°
38°
13
65°
45°
14
63°
48°
15
64°
47°
16
76°
45°
17
86°
57°
18
89°
64°
19
93°
69°
20
87°
47°
21
63°
40°
22
64°
46°
23
60°
53°
24
69°
50°
25
73°
52°
26
72°
51°
27
74°
51°
28
76°
53°
29
75°
54°
30
76°
53°
31
77°
49°
1
74°
51°
2
70°
49°
3
69°
48°
4
70°
53°
5
74°
53°
6
75°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in West Cornwall
West Cornwall's May 2026 forecast shows daily high temperatures ranging from 60° to 93°, with overnight lows between 40° and 69°. 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 West Cornwall. See also: June | July | August.
