S
M
T
W
T
F
S
29
71°
61°
30
79°
60°
31
82°
63°
1
81°
63°
2
81°
64°
3
84°
67°
4
83°
67°
5
87°
66°
6
72°
62°
7
66°
62°
8
70°
61°
9
71°
62°
10
76°
63°
11
79°
60°
12
79°
59°
13
80°
62°
14
82°
63°
15
83°
64°
16
86°
64°
17
88°
64°
18
89°
67°
19
88°
68°
20
73°
61°
21
80°
54°
22
80°
61°
23
81°
60°
24
83°
64°
25
87°
65°
26
84°
67°
27
72°
66°
28
82°
66°
29
90°
71°
30
85°
69°
1
82°
66°
2
78°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in San Marco
San Marco's April 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 56° and 71°. The average high for April is 84° with an average low of 66°. 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 Marco. See also: May | June | July.