S
M
T
W
T
F
S
30
85°
62°
31
82°
59°
1
82°
60°
2
83°
61°
3
86°
65°
4
85°
58°
5
86°
57°
6
78°
57°
7
79°
60°
8
81°
57°
9
79°
55°
10
82°
57°
11
83°
54°
12
78°
54°
13
77°
53°
14
78°
54°
15
79°
55°
16
81°
54°
17
82°
56°
18
82°
59°
19
83°
52°
20
83°
51°
21
Hist. Avg.
80°
58°
22
Hist. Avg.
80°
58°
23
Hist. Avg.
80°
57°
24
Hist. Avg.
79°
57°
25
Hist. Avg.
79°
57°
26
Hist. Avg.
78°
56°
27
Hist. Avg.
78°
56°
28
Hist. Avg.
78°
56°
29
Hist. Avg.
77°
55°
30
Hist. Avg.
77°
55°
1
Hist. Avg.
76°
54°
2
Hist. Avg.
76°
54°
3
Hist. Avg.
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Devon
Devon's September 2026 forecast shows daily high temperatures ranging from 77° to 86°, with overnight lows between 51° and 65°. The average high for September is 82° with an average low of 57°. 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.
