S
M
T
W
T
F
S
30
93°
75°
31
95°
74°
1
93°
73°
2
92°
73°
3
93°
74°
4
92°
73°
5
93°
72°
6
92°
73°
7
93°
72°
8
91°
73°
9
91°
72°
10
92°
71°
11
92°
72°
12
92°
75°
13
94°
74°
14
92°
74°
15
Hist. Avg.
90°
72°
16
Hist. Avg.
89°
72°
17
Hist. Avg.
89°
72°
18
Hist. Avg.
89°
71°
19
Hist. Avg.
89°
71°
20
Hist. Avg.
89°
71°
21
Hist. Avg.
89°
71°
22
Hist. Avg.
89°
71°
23
Hist. Avg.
89°
71°
24
Hist. Avg.
89°
70°
25
Hist. Avg.
88°
70°
26
Hist. Avg.
88°
70°
27
Hist. Avg.
88°
70°
28
Hist. Avg.
88°
70°
29
Hist. Avg.
88°
70°
30
Hist. Avg.
88°
69°
1
Hist. Avg.
88°
69°
2
Hist. Avg.
88°
69°
3
Hist. Avg.
87°
69°
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 91° to 95°, with overnight lows between 71° and 75°. The average high for September is 93° with an average low of 73°. 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.
