S
M
T
W
T
F
S
30
65°
49°
31
71°
46°
1
78°
47°
2
76°
52°
3
66°
53°
4
63°
47°
5
55°
49°
6
61°
51°
7
64°
46°
8
72°
46°
9
76°
44°
10
64°
47°
11
55°
45°
12
55°
33°
13
67°
33°
14
62°
42°
15
61°
29°
16
68°
32°
17
74°
33°
18
72°
36°
19
77°
44°
20
78°
39°
21
82°
41°
22
66°
41°
23
61°
38°
24
64°
34°
25
60°
48°
26
52°
32°
27
60°
26°
28
67°
29°
29
59°
31°
30
59°
30°
1
60°
27°
2
58°
27°
3
60°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Devon
Devon's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Devon. See also: October | November | December.
