S
M
T
W
T
F
S
26
89°
71°
27
91°
76°
28
95°
78°
29
87°
70°
30
79°
64°
1
68°
56°
2
76°
53°
3
80°
52°
4
83°
62°
5
90°
69°
6
88°
67°
7
73°
63°
8
80°
64°
9
92°
73°
10
91°
67°
11
85°
66°
12
87°
64°
13
89°
65°
14
90°
64°
15
92°
70°
16
91°
70°
17
88°
77°
18
94°
77°
19
88°
72°
20
84°
71°
21
82°
69°
22
84°
70°
23
86°
70°
24
87°
71°
25
88°
70°
26
88°
72°
27
89°
72°
28
89°
73°
29
90°
74°
30
94°
77°
31
88°
73°
1
87°
75°
2
90°
74°
3
89°
72°
4
87°
70°
5
87°
71°
6
88°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Jbsa Lackland
Jbsa Lackland's May 2026 forecast shows daily high temperatures ranging from 82° to 94°, with overnight lows between 69° and 77°. The average high for May is 88° with an average low of 73°. 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 Jbsa Lackland. See also: June | July | August.