S
M
T
W
T
F
S
30
76°
53°
31
75°
53°
1
75°
54°
2
76°
54°
3
74°
55°
4
73°
54°
5
76°
54°
6
75°
53°
7
73°
51°
8
74°
50°
9
72°
51°
10
73°
55°
11
72°
50°
12
71°
50°
13
74°
49°
14
74°
55°
15
75°
55°
16
75°
53°
17
71°
48°
18
70°
47°
19
71°
48°
20
74°
53°
21
70°
47°
22
69°
50°
23
72°
52°
24
73°
53°
25
74°
51°
26
73°
44°
27
72°
45°
28
65°
44°
29
64°
43°
30
66°
45°
1
65°
43°
2
Hist. Avg.
70°
47°
3
Hist. Avg.
70°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dover
Dover's September 2026 forecast shows daily high temperatures ranging from 64° to 76°, with overnight lows between 43° and 55°. The average high for September is 72° with an average low of 50°. 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.
