S
M
T
W
T
F
S
30
88°
69°
31
85°
71°
1
87°
73°
2
88°
69°
3
83°
68°
4
84°
69°
5
83°
69°
6
87°
72°
7
87°
73°
8
86°
72°
9
86°
73°
10
85°
72°
11
86°
72°
12
86°
71°
13
85°
71°
14
86°
70°
15
84°
70°
16
85°
69°
17
84°
66°
18
82°
68°
19
83°
67°
20
84°
68°
21
85°
69°
22
80°
68°
23
84°
68°
24
83°
69°
25
84°
67°
26
84°
63°
27
Hist. Avg.
81°
63°
28
Hist. Avg.
80°
63°
29
Hist. Avg.
80°
62°
30
Hist. Avg.
80°
62°
1
Hist. Avg.
80°
62°
2
Hist. Avg.
79°
61°
3
Hist. Avg.
79°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in North Myrtle Beach
North Myrtle Beach's September 2026 forecast shows daily high temperatures ranging from 80° to 88°, with overnight lows between 63° and 73°. The average high for September is 85° with an average low of 70°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in North Myrtle Beach. See also: October | November | December.
