S
M
T
W
T
F
S
30
70°
49°
31
67°
50°
1
64°
51°
2
67°
46°
3
68°
47°
4
62°
53°
5
66°
53°
6
68°
47°
7
69°
46°
8
62°
46°
9
61°
48°
10
63°
51°
11
64°
50°
12
65°
50°
13
64°
51°
14
62°
52°
15
64°
50°
16
66°
47°
17
62°
47°
18
62°
46°
19
61°
43°
20
60°
47°
21
59°
50°
22
63°
43°
23
64°
41°
24
62°
45°
25
56°
45°
26
56°
48°
27
Hist. Avg.
55°
41°
28
Hist. Avg.
55°
40°
29
Hist. Avg.
55°
40°
30
Hist. Avg.
54°
40°
1
Hist. Avg.
54°
40°
2
Hist. Avg.
53°
39°
3
Hist. Avg.
53°
39°
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 56° to 70°, with overnight lows between 41° and 53°. The average high for September is 63° with an average low of 48°. 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.
