S
M
T
W
T
F
S
30
73°
57°
31
70°
54°
1
70°
52°
2
68°
61°
3
73°
59°
4
67°
51°
5
67°
53°
6
76°
57°
7
68°
54°
8
63°
52°
9
62°
47°
10
62°
50°
11
65°
51°
12
62°
48°
13
63°
50°
14
65°
52°
15
65°
51°
16
61°
46°
17
62°
49°
18
63°
47°
19
65°
51°
20
65°
51°
21
64°
52°
22
65°
51°
23
65°
51°
24
63°
50°
25
64°
51°
26
64°
50°
27
63°
47°
28
63°
50°
29
62°
50°
30
63°
49°
1
58°
44°
2
57°
44°
3
58°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Duffield
Duffield's September 2026 forecast shows daily high temperatures ranging from 57° to 76°, with overnight lows between 43° and 61°. The average high for September is 64° with an average low of 50°. 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 Duffield. See also: October | November | December.