S
M
T
W
T
F
S
26
57°
36°
27
48°
32°
28
55°
27°
29
55°
36°
30
59°
37°
1
66°
36°
2
68°
37°
3
73°
39°
4
73°
45°
5
68°
48°
6
70°
32°
7
73°
46°
8
73°
39°
9
74°
42°
10
82°
46°
11
82°
45°
12
87°
50°
13
74°
44°
14
71°
44°
15
69°
40°
16
66°
41°
17
63°
38°
18
65°
38°
19
66°
37°
20
65°
37°
21
66°
38°
22
60°
38°
23
63°
39°
24
67°
41°
25
71°
44°
26
72°
44°
27
71°
43°
28
72°
44°
29
70°
44°
30
72°
45°
31
73°
45°
1
74°
46°
2
75°
46°
3
73°
42°
4
67°
43°
5
73°
46°
6
71°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Castle Rocks
Castle Rocks's May 2026 forecast shows daily high temperatures ranging from 60° to 87°, with overnight lows between 37° and 50°. The average high for May is 71° with an average low of 42°. 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 Castle Rocks. See also: June | July | August.
