S
M
T
W
T
F
S
26
84°
64°
27
84°
65°
28
85°
65°
29
85°
66°
30
84°
66°
1
86°
65°
2
86°
65°
3
83°
60°
4
82°
66°
5
85°
67°
6
84°
66°
7
86°
67°
8
86°
68°
9
87°
67°
10
87°
68°
11
86°
68°
12
87°
67°
13
82°
68°
14
85°
68°
15
82°
69°
16
87°
68°
17
83°
69°
18
85°
63°
19
82°
63°
20
83°
69°
21
89°
70°
22
90°
67°
23
90°
67°
24
86°
64°
25
85°
70°
26
87°
69°
27
88°
70°
28
88°
70°
29
87°
69°
30
88°
67°
31
85°
65°
1
85°
65°
2
86°
66°
3
91°
67°
4
90°
69°
5
88°
73°
6
90°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in San Antonio Central
San Antonio Central's May 2026 forecast shows daily high temperatures ranging from 82° to 91°, with overnight lows between 60° and 73°. The average high for May is 86° with an average low of 67°. 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 San Antonio Central. See also: June | July | August.