S
M
T
W
T
F
S
30
85°
64°
31
79°
65°
1
78°
70°
2
79°
71°
3
85°
70°
4
86°
71°
5
85°
69°
6
84°
65°
7
83°
67°
8
80°
64°
9
79°
62°
10
77°
62°
11
77°
63°
12
78°
62°
13
79°
67°
14
82°
67°
15
79°
61°
16
77°
64°
17
76°
63°
18
77°
66°
19
79°
59°
20
80°
63°
21
77°
62°
22
81°
59°
23
74°
58°
24
74°
58°
25
75°
60°
26
74°
62°
27
78°
63°
28
77°
63°
29
78°
56°
30
75°
57°
1
71°
63°
2
78°
62°
3
77°
56°
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 86°, with overnight lows between 56° and 71°. The average high for September is 79° with an average low of 63°. 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.
