S
M
T
W
T
F
S
29
84°
77°
30
84°
75°
31
85°
77°
1
86°
78°
2
86°
76°
3
86°
75°
4
87°
76°
5
86°
79°
6
86°
74°
7
85°
76°
8
86°
77°
9
N/A
10
86°
78°
11
86°
77°
12
85°
79°
13
86°
79°
14
85°
80°
15
87°
79°
16
87°
79°
17
88°
77°
18
87°
76°
19
88°
77°
20
88°
79°
21
89°
78°
22
85°
79°
23
86°
78°
24
86°
79°
25
87°
80°
26
86°
78°
27
86°
78°
28
86°
78°
29
86°
78°
30
86°
78°
1
87°
79°
2
86°
80°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in San Antonio
San Antonio's April 2026 forecast shows daily high temperatures ranging from 85° to 89°, with overnight lows between 76° and 80°. The average high for April is 86° with an average low of 78°. 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.
