S
M
T
W
T
F
S
29
67°
32°
30
63°
28°
31
49°
30°
1
40°
27°
2
33°
31°
3
33°
29°
4
36°
29°
5
48°
26°
6
36°
17°
7
43°
8°
8
55°
34°
9
45°
35°
10
53°
29°
11
51°
22°
12
81°
46°
13
58°
44°
14
61°
42°
15
65°
37°
16
77°
32°
17
74°
33°
18
43°
28°
19
45°
22°
20
58°
18°
21
73°
33°
22
80°
32°
23
72°
61°
24
62°
35°
25
61°
42°
26
59°
50°
27
60°
37°
28
58°
31°
29
55°
30°
30
54°
35°
1
58°
34°
2
62°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Siren
Siren's April 2026 forecast shows daily high temperatures ranging from 54° to 62°, with overnight lows between 30° and 50°. The average high for April is 58° with an average low of 37°. 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 Siren. See also: May | June | July.