S
M
T
W
T
F
S
26
67°
47°
27
65°
56°
28
63°
43°
29
63°
43°
30
64°
41°
1
64°
42°
2
63°
44°
3
65°
50°
4
66°
45°
5
63°
43°
6
63°
44°
7
65°
48°
8
70°
45°
9
65°
45°
10
63°
44°
11
64°
44°
12
66°
50°
13
76°
56°
14
77°
57°
15
78°
57°
16
77°
52°
17
68°
50°
18
72°
55°
19
77°
57°
20
78°
57°
21
77°
52°
22
69°
50°
23
69°
49°
24
70°
49°
25
74°
56°
26
80°
58°
27
82°
59°
28
80°
58°
29
77°
59°
30
73°
52°
31
75°
56°
1
78°
52°
2
73°
51°
3
72°
50°
4
72°
52°
5
74°
56°
6
78°
61°
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 63° to 82°, with overnight lows between 41° and 61°. The average high for May is 71° with an average low of 51°. 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.