S
M
T
W
T
F
S
30
76°
54°
31
76°
49°
1
75°
45°
2
68°
44°
3
67°
48°
4
71°
53°
5
74°
54°
6
74°
45°
7
70°
44°
8
69°
46°
9
71°
51°
10
64°
52°
11
71°
51°
12
71°
50°
13
69°
50°
14
63°
45°
15
63°
41°
16
62°
40°
17
62°
48°
18
64°
41°
19
62°
49°
20
66°
50°
21
67°
45°
22
64°
38°
23
60°
42°
24
59°
44°
25
58°
39°
26
58°
37°
27
Hist. Avg.
64°
42°
28
Hist. Avg.
64°
42°
29
Hist. Avg.
63°
42°
30
Hist. Avg.
62°
41°
1
Hist. Avg.
62°
41°
2
Hist. Avg.
62°
41°
3
Hist. Avg.
61°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Derby Line
Derby Line's September 2026 forecast shows daily high temperatures ranging from 58° to 76°, with overnight lows between 37° and 54°. The average high for September is 67° with an average low of 46°. 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 Line. See also: October | November | December.
