S
M
T
W
T
F
S
26
34°
25°
27
34°
27°
28
32°
23°
29
36°
27°
30
32°
23°
1
36°
23°
2
46°
27°
3
46°
32°
4
41°
30°
5
41°
27°
6
28°
21°
7
43°
23°
8
53°
29°
9
53°
26°
10
57°
30°
11
63°
35°
12
62°
36°
13
62°
36°
14
56°
35°
15
57°
35°
16
55°
33°
17
59°
32°
18
55°
32°
19
52°
33°
20
55°
32°
21
51°
27°
22
46°
23°
23
46°
24°
24
47°
23°
25
46°
23°
26
49°
24°
27
55°
30°
28
54°
29°
29
55°
27°
30
56°
26°
31
56°
29°
1
55°
29°
2
55°
30°
3
59°
33°
4
55°
34°
5
50°
32°
6
51°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Crystal
Crystal's May 2026 forecast shows daily high temperatures ranging from 46° to 63°, with overnight lows between 23° and 36°. The average high for May is 54° with an average low of 30°. 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 Crystal. See also: June | July | August.