S
M
T
W
T
F
S
29
36°
2°
30
38°
14°
31
37°
2°
1
38°
1°
2
39°
2°
3
40°
7°
4
43°
8°
5
43°
32°
6
43°
25°
7
39°
27°
8
39°
35°
9
46°
27°
10
42°
26°
11
45°
32°
12
36°
32°
13
45°
32°
14
45°
28°
15
39°
26°
16
39°
35°
17
41°
35°
18
47°
28°
19
39°
31°
20
41°
29°
21
44°
25°
22
40°
36°
23
40°
34°
24
40°
35°
25
44°
37°
26
44°
35°
27
42°
35°
28
44°
32°
29
42°
31°
30
45°
35°
1
44°
40°
2
46°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Whittier
Whittier's April 2026 forecast shows daily high temperatures ranging from 42° to 46°, with overnight lows between 31° and 42°. The average high for April is 44° with an average low of 36°. 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 Whittier. See also: May | June | July.