S
M
T
W
T
F
S
29
50°
42°
30
52°
33°
31
51°
32°
1
53°
41°
2
55°
41°
3
60°
39°
4
68°
37°
5
73°
44°
6
75°
45°
7
71°
44°
8
66°
36°
9
69°
37°
10
70°
39°
11
66°
49°
12
60°
45°
13
58°
43°
14
57°
39°
15
54°
38°
16
53°
37°
17
55°
37°
18
66°
34°
19
73°
43°
20
78°
44°
21
75°
48°
22
54°
42°
23
60°
40°
24
57°
35°
25
61°
32°
26
64°
40°
27
64°
37°
28
63°
42°
29
69°
42°
30
73°
46°
1
75°
47°
2
75°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Myrtle
Myrtle's April 2026 forecast shows daily high temperatures ranging from 63° to 75°, with overnight lows between 42° and 49°. The average high for April is 71° with an average low of 45°. 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 Myrtle. See also: May | June | July.