S
M
T
W
T
F
S
29
75°
38°
30
79°
56°
31
82°
62°
1
87°
63°
2
83°
65°
3
85°
63°
4
76°
47°
5
66°
42°
6
68°
41°
7
70°
43°
8
74°
50°
9
75°
51°
10
73°
54°
11
72°
50°
12
72°
50°
13
75°
54°
14
72°
46°
15
77°
53°
16
76°
52°
17
75°
52°
18
67°
51°
19
77°
52°
20
77°
54°
21
76°
54°
22
78°
53°
23
78°
55°
24
79°
55°
25
78°
54°
26
78°
50°
27
72°
46°
28
69°
48°
29
78°
51°
30
70°
47°
1
70°
51°
2
71°
52°
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 66° to 87°, with overnight lows between 41° and 65°. The average high for April is 75° with an average low of 52°. 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.