S
M
T
W
T
F
S
26
81°
51°
27
83°
61°
28
66°
55°
29
64°
50°
30
67°
40°
1
64°
44°
2
61°
44°
3
77°
55°
4
81°
58°
5
65°
45°
6
58°
44°
7
65°
47°
8
66°
48°
9
72°
48°
10
70°
49°
11
67°
47°
12
72°
51°
13
75°
55°
14
75°
53°
15
77°
54°
16
76°
54°
17
77°
58°
18
74°
59°
19
78°
58°
20
74°
54°
21
77°
52°
22
71°
51°
23
71°
50°
24
72°
52°
25
71°
52°
26
71°
52°
27
73°
52°
28
74°
56°
29
75°
56°
30
79°
61°
31
76°
62°
1
76°
56°
2
77°
57°
3
77°
59°
4
78°
63°
5
81°
64°
6
79°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Crystal City
Crystal City's May 2026 forecast shows daily high temperatures ranging from 58° to 81°, with overnight lows between 44° and 64°. The average high for May is 74° with an average low of 54°. 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 City. See also: June | July | August.