S
M
T
W
T
F
S
29
92°
80°
30
94°
79°
31
94°
80°
1
94°
78°
2
92°
78°
3
94°
75°
4
94°
78°
5
98°
74°
6
96°
78°
7
100°
80°
8
95°
81°
9
96°
75°
10
98°
81°
11
97°
81°
12
95°
81°
13
97°
80°
14
96°
81°
15
95°
79°
16
98°
79°
17
97°
80°
18
97°
80°
19
97°
76°
20
96°
82°
21
94°
79°
22
87°
70°
23
90°
71°
24
91°
74°
25
91°
74°
26
91°
74°
27
90°
72°
28
89°
73°
29
86°
75°
30
87°
77°
1
88°
76°
2
87°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in San Isidro
San Isidro's April 2026 forecast shows daily high temperatures ranging from 86° to 91°, with overnight lows between 70° and 77°. The average high for April is 89° with an average low of 74°. 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 Isidro. See also: May | June | July.
