S
M
T
W
T
F
S
30
88°
63°
31
84°
62°
1
84°
65°
2
86°
65°
3
89°
66°
4
89°
59°
5
83°
58°
6
80°
58°
7
82°
63°
8
86°
60°
9
85°
57°
10
84°
58°
11
88°
56°
12
81°
54°
13
80°
56°
14
81°
55°
15
80°
56°
16
86°
56°
17
85°
55°
18
85°
59°
19
88°
52°
20
86°
51°
21
77°
53°
22
Hist. Avg.
81°
55°
23
Hist. Avg.
81°
55°
24
Hist. Avg.
80°
54°
25
Hist. Avg.
80°
54°
26
Hist. Avg.
80°
53°
27
Hist. Avg.
79°
53°
28
Hist. Avg.
79°
52°
29
Hist. Avg.
78°
52°
30
Hist. Avg.
78°
52°
1
Hist. Avg.
78°
51°
2
Hist. Avg.
77°
51°
3
Hist. Avg.
77°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Derby
Derby's September 2026 forecast shows daily high temperatures ranging from 77° to 89°, with overnight lows between 51° and 66°. The average high for September is 84° with an average low of 58°. 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.
