S
M
T
W
T
F
S
30
70°
57°
31
70°
57°
1
69°
56°
2
73°
56°
3
71°
57°
4
71°
55°
5
67°
55°
6
67°
54°
7
68°
53°
8
66°
55°
9
68°
57°
10
71°
55°
11
67°
57°
12
68°
56°
13
65°
56°
14
66°
55°
15
69°
55°
16
70°
56°
17
Hist. Avg.
64°
52°
18
Hist. Avg.
64°
52°
19
Hist. Avg.
64°
52°
20
Hist. Avg.
64°
52°
21
Hist. Avg.
64°
52°
22
Hist. Avg.
63°
52°
23
Hist. Avg.
63°
51°
24
Hist. Avg.
63°
51°
25
Hist. Avg.
63°
51°
26
Hist. Avg.
63°
51°
27
Hist. Avg.
62°
51°
28
Hist. Avg.
62°
51°
29
Hist. Avg.
62°
50°
30
Hist. Avg.
62°
50°
1
Hist. Avg.
61°
50°
2
Hist. Avg.
61°
50°
3
Hist. Avg.
61°
50°
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 65° to 73°, with overnight lows between 53° and 57°. The average high for September is 69° with an average low of 56°. 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.
