S
M
T
W
T
F
S
30
87°
68°
31
86°
62°
1
83°
61°
2
79°
62°
3
80°
62°
4
81°
63°
5
80°
62°
6
78°
61°
7
78°
61°
8
79°
63°
9
79°
61°
10
77°
61°
11
79°
63°
12
81°
61°
13
80°
60°
14
77°
59°
15
78°
60°
16
78°
58°
17
77°
59°
18
76°
59°
19
78°
58°
20
Hist. Avg.
78°
60°
21
Hist. Avg.
78°
59°
22
Hist. Avg.
77°
59°
23
Hist. Avg.
77°
59°
24
Hist. Avg.
77°
58°
25
Hist. Avg.
76°
58°
26
Hist. Avg.
76°
58°
27
Hist. Avg.
76°
57°
28
Hist. Avg.
75°
57°
29
Hist. Avg.
75°
56°
30
Hist. Avg.
74°
56°
1
Hist. Avg.
74°
56°
2
Hist. Avg.
74°
55°
3
Hist. Avg.
73°
55°
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 76° to 87°, with overnight lows between 58° and 68°. The average high for September is 80° with an average low of 61°. 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.
