S
M
T
W
T
F
S
26
61°
48°
27
58°
42°
28
56°
40°
29
60°
38°
30
57°
39°
1
58°
41°
2
61°
42°
3
60°
41°
4
70°
49°
5
65°
41°
6
69°
44°
7
66°
42°
8
58°
44°
9
63°
43°
10
59°
42°
11
63°
49°
12
64°
46°
13
61°
42°
14
63°
41°
15
69°
49°
16
69°
52°
17
72°
47°
18
70°
42°
19
61°
43°
20
64°
48°
21
65°
53°
22
73°
54°
23
76°
57°
24
74°
56°
25
75°
54°
26
67°
50°
27
67°
48°
28
68°
50°
29
67°
53°
30
67°
49°
31
70°
51°
1
71°
51°
2
74°
48°
3
72°
50°
4
74°
51°
5
72°
48°
6
71°
50°
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 56° to 76°, with overnight lows between 38° and 57°. The average high for May is 66° 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 Crystal. See also: June | July | August.