S
M
T
W
T
F
S
26
65°
34°
27
58°
38°
28
58°
36°
29
52°
37°
30
42°
33°
1
56°
32°
2
65°
36°
3
72°
41°
4
71°
46°
5
47°
33°
6
41°
30°
7
69°
27°
8
69°
41°
9
76°
42°
10
63°
44°
11
79°
40°
12
79°
52°
13
80°
49°
14
85°
55°
15
82°
52°
16
80°
48°
17
80°
44°
18
61°
35°
19
60°
38°
20
65°
38°
21
66°
45°
22
82°
52°
23
79°
53°
24
71°
48°
25
72°
50°
26
72°
52°
27
75°
46°
28
72°
44°
29
69°
42°
30
74°
48°
31
79°
51°
1
74°
52°
2
79°
52°
3
81°
53°
4
82°
54°
5
82°
54°
6
81°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Security
Security's May 2026 forecast shows daily high temperatures ranging from 60° to 85°, with overnight lows between 35° and 55°. The average high for May is 75° with an average low of 48°. 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 Security. See also: June | July | August.