S
M
T
W
T
F
S
1
61°
44°
2
60°
46°
3
66°
46°
4
69°
48°
5
71°
54°
6
72°
59°
7
74°
61°
8
71°
60°
9
72°
57°
10
71°
55°
11
71°
61°
12
70°
38°
13
59°
35°
14
69°
50°
15
72°
51°
16
67°
44°
17
51°
35°
18
54°
34°
19
56°
37°
20
63°
36°
21
83°
53°
22
74°
55°
23
84°
58°
24
62°
44°
25
68°
42°
26
73°
51°
27
74°
61°
28
70°
42°
29
64°
38°
30
71°
47°
31
74°
56°
1
74°
60°
2
75°
61°
3
76°
64°
4
76°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Myrtle Beach
Myrtle Beach's March 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for March is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how March weather will actually feel in Myrtle Beach. See also: April | May | June.