S
M
T
W
T
F
S
26
72°
49°
27
78°
50°
28
78°
54°
29
74°
60°
30
73°
59°
1
74°
59°
2
74°
59°
3
71°
58°
4
72°
57°
5
62°
57°
6
70°
62°
7
67°
61°
8
69°
62°
9
70°
63°
10
70°
63°
11
71°
62°
12
70°
63°
13
66°
59°
14
64°
58°
15
66°
58°
16
66°
59°
17
70°
60°
18
71°
62°
19
71°
62°
20
65°
59°
21
67°
61°
22
70°
63°
23
72°
65°
24
70°
61°
25
70°
63°
26
73°
65°
27
72°
66°
28
72°
67°
29
71°
67°
30
68°
66°
31
67°
66°
1
68°
65°
2
70°
67°
3
70°
66°
4
70°
67°
5
70°
62°
6
69°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Castellón de la Plana
Castellón de la Plana's May 2026 forecast shows daily high temperatures ranging from 62° to 78°, with overnight lows between 49° and 67°. The average high for May is 70° with an average low of 61°. 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 Castellón de la Plana. See also: June | July | August.
