S
M
T
W
T
F
S
26
56°
34°
27
53°
35°
28
57°
35°
29
56°
40°
30
44°
37°
1
58°
31°
2
69°
38°
3
72°
47°
4
70°
44°
5
47°
31°
6
37°
29°
7
67°
36°
8
67°
39°
9
73°
45°
10
67°
45°
11
83°
45°
12
78°
55°
13
84°
60°
14
83°
47°
15
79°
45°
16
72°
45°
17
69°
39°
18
52°
34°
19
55°
38°
20
62°
42°
21
64°
46°
22
77°
51°
23
75°
53°
24
79°
51°
25
77°
50°
26
73°
45°
27
69°
48°
28
70°
43°
29
68°
41°
30
72°
47°
31
77°
50°
1
72°
51°
2
78°
51°
3
80°
52°
4
81°
53°
5
81°
53°
6
80°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Castle Pines
Castle Pines's May 2026 forecast shows daily high temperatures ranging from 52° to 84°, with overnight lows between 34° and 60°. The average high for May is 73° with an average low of 47°. 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 Pines. See also: June | July | August.
