S
M
T
W
T
F
S
29
28°
2°
30
38°
25°
31
32°
21°
1
24°
13°
2
29°
7°
3
31°
13°
4
32°
14°
5
35°
10°
6
38°
28°
7
31°
25°
8
30°
27°
9
36°
35°
10
41°
36°
11
39°
33°
12
35°
28°
13
35°
33°
14
34°
29°
15
31°
29°
16
34°
31°
17
36°
32°
18
36°
31°
19
37°
32°
20
38°
31°
21
38°
30°
22
39°
30°
23
38°
31°
24
39°
34°
25
39°
34°
26
40°
35°
27
39°
32°
28
40°
31°
29
40°
31°
30
41°
32°
1
41°
31°
2
42°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Mainland
Mainland's April 2026 forecast shows daily high temperatures ranging from 30° to 42°, with overnight lows between 25° and 36°. The average high for April is 37° with an average low of 31°. 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 Mainland. See also: May | June | July.