S
M
T
W
T
F
S
1
68°
45°
2
61°
45°
3
63°
54°
4
72°
50°
5
75°
59°
6
75°
61°
7
75°
63°
8
77°
66°
9
77°
64°
10
82°
66°
11
82°
66°
12
77°
52°
13
63°
50°
14
73°
52°
15
70°
63°
16
70°
41°
17
52°
37°
18
54°
37°
19
59°
45°
20
66°
43°
21
86°
55°
22
82°
63°
23
84°
63°
24
72°
54°
25
59°
52°
26
73°
55°
27
86°
64°
28
70°
55°
29
64°
52°
30
72°
54°
31
77°
57°
1
75°
59°
2
75°
61°
3
75°
64°
4
79°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Hilton Head Island
Hilton Head Island'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 Hilton Head Island. See also: April | May | June.