S
M
T
W
T
F
S
29
25°
18°
30
27°
16°
31
32°
6°
1
40°
14°
2
35°
28°
3
43°
28°
4
46°
32°
5
36°
28°
6
44°
26°
7
38°
29°
8
40°
26°
9
46°
24°
10
58°
27°
11
58°
30°
12
41°
30°
13
61°
33°
14
58°
36°
15
42°
19°
16
25°
15°
17
40°
11°
18
47°
24°
19
67°
29°
20
73°
38°
21
69°
40°
22
46°
27°
23
37°
23°
24
35°
20°
25
31°
19°
26
32°
21°
27
43°
25°
28
48°
31°
29
52°
33°
30
58°
34°
1
54°
33°
2
56°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Signal Hill
Signal Hill's April 2026 forecast shows daily high temperatures ranging from 31° to 69°, with overnight lows between 19° and 40°. The average high for April is 47° with an average low of 28°. 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 Signal Hill. See also: May | June | July.
