S
M
T
W
T
F
S
30
72°
67°
31
73°
69°
1
74°
72°
2
76°
71°
3
77°
71°
4
74°
66°
5
75°
63°
6
74°
62°
7
75°
60°
8
76°
66°
9
78°
73°
10
76°
65°
11
71°
59°
12
80°
68°
13
76°
55°
14
67°
50°
15
76°
63°
16
76°
63°
17
76°
59°
18
71°
56°
19
71°
54°
20
67°
51°
21
66°
51°
22
70°
53°
23
69°
51°
24
67°
52°
25
68°
48°
26
68°
54°
27
72°
54°
28
73°
53°
29
68°
52°
30
67°
53°
1
69°
53°
2
72°
52°
3
68°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Derby
Derby's September 2026 forecast shows daily high temperatures ranging from 66° to 80°, with overnight lows between 48° and 68°. The average high for September is 71° with an average low of 54°. 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 Derby. See also: October | November | December.
