S
M
T
W
T
F
S
26
96°
73°
27
98°
69°
28
100°
74°
29
98°
68°
30
90°
64°
1
90°
51°
2
79°
49°
3
86°
55°
4
94°
59°
5
100°
63°
6
99°
63°
7
103°
64°
8
96°
60°
9
98°
64°
10
97°
67°
11
99°
67°
12
99°
66°
13
95°
65°
14
90°
62°
15
90°
59°
16
91°
63°
17
95°
66°
18
97°
67°
19
97°
67°
20
94°
68°
21
93°
68°
22
94°
67°
23
93°
65°
24
92°
64°
25
92°
66°
26
93°
67°
27
93°
67°
28
94°
68°
29
94°
69°
30
95°
69°
31
94°
71°
1
94°
69°
2
95°
70°
3
95°
72°
4
96°
73°
5
99°
73°
6
101°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Castolon
Castolon's May 2026 forecast shows daily high temperatures ranging from 79° to 103°, with overnight lows between 49° and 74°. The average high for May is 95° with an average low of 66°. 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 Castolon. See also: June | July | August.
