S
M
T
W
T
F
S
30
83°
69°
31
84°
70°
1
84°
69°
2
85°
72°
3
85°
70°
4
87°
69°
5
87°
72°
6
86°
72°
7
83°
70°
8
87°
71°
9
86°
71°
10
87°
70°
11
85°
70°
12
84°
69°
13
85°
70°
14
84°
68°
15
85°
70°
16
86°
71°
17
Hist. Avg.
84°
67°
18
Hist. Avg.
83°
66°
19
Hist. Avg.
83°
66°
20
Hist. Avg.
83°
66°
21
Hist. Avg.
82°
66°
22
Hist. Avg.
82°
65°
23
Hist. Avg.
82°
65°
24
Hist. Avg.
82°
64°
25
Hist. Avg.
81°
64°
26
Hist. Avg.
81°
64°
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 83° to 87°, with overnight lows between 68° and 72°. 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.
