S
M
T
W
T
F
S
29
85°
55°
30
89°
63°
31
90°
67°
1
92°
71°
2
90°
71°
3
87°
73°
4
84°
62°
5
66°
54°
6
76°
53°
7
79°
48°
8
82°
54°
9
82°
66°
10
83°
67°
11
86°
69°
12
83°
71°
13
92°
72°
14
90°
71°
15
84°
69°
16
89°
68°
17
88°
71°
18
74°
53°
19
71°
55°
20
65°
58°
21
72°
67°
22
81°
68°
23
85°
66°
24
84°
65°
25
82°
63°
26
83°
60°
27
80°
61°
28
82°
60°
29
86°
65°
30
85°
64°
1
87°
66°
2
87°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in San Antonio
San Antonio's April 2026 forecast shows daily high temperatures ranging from 65° to 89°, with overnight lows between 53° and 71°. The average high for April is 81° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in San Antonio. See also: May | June | July.
