S
M
T
W
T
F
S
30
88°
66°
31
83°
73°
1
92°
72°
2
85°
72°
3
88°
74°
4
88°
73°
5
82°
66°
6
81°
62°
7
80°
63°
8
83°
63°
9
88°
69°
10
89°
74°
11
78°
67°
12
80°
63°
13
87°
74°
14
79°
59°
15
75°
54°
16
84°
59°
17
86°
69°
18
84°
69°
19
78°
65°
20
83°
71°
21
76°
65°
22
67°
60°
23
69°
57°
24
65°
53°
25
N/A
26
66°
56°
27
64°
58°
28
69°
60°
29
75°
62°
30
77°
60°
1
85°
65°
2
88°
67°
3
68°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Dover
Dover's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September 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 September weather will actually feel in Dover. See also: October | November | December.
