S
M
T
W
T
F
S
30
87°
62°
31
86°
71°
1
89°
75°
2
81°
74°
3
89°
75°
4
85°
72°
5
82°
67°
6
79°
62°
7
82°
67°
8
81°
66°
9
83°
66°
10
81°
68°
11
83°
65°
12
77°
65°
13
78°
66°
14
82°
68°
15
78°
67°
16
78°
68°
17
76°
64°
18
75°
60°
19
74°
61°
20
74°
64°
21
77°
66°
22
80°
66°
23
82°
67°
24
82°
65°
25
79°
64°
26
79°
64°
27
80°
65°
28
79°
65°
29
80°
64°
30
74°
62°
1
71°
61°
2
73°
62°
3
77°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rehoboth Beach
Rehoboth Beach's September 2026 forecast shows daily high temperatures ranging from 71° to 89°, with overnight lows between 60° and 75°. The average high for September is 79° with an average low of 66°. 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 Rehoboth Beach. See also: October | November | December.
