S
M
T
W
T
F
S
30
65°
57°
31
64°
56°
1
64°
56°
2
65°
57°
3
65°
55°
4
64°
53°
5
62°
52°
6
62°
52°
7
63°
53°
8
62°
56°
9
63°
53°
10
63°
52°
11
67°
51°
12
63°
51°
13
62°
55°
14
64°
55°
15
62°
50°
16
62°
50°
17
63°
51°
18
62°
48°
19
61°
50°
20
61°
50°
21
62°
54°
22
62°
51°
23
63°
51°
24
61°
50°
25
60°
53°
26
61°
54°
27
64°
54°
28
64°
53°
29
63°
48°
30
63°
53°
1
62°
52°
2
60°
51°
3
60°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Barnstaple
Barnstaple's September 2026 forecast shows daily high temperatures ranging from 60° to 67°, with overnight lows between 48° and 57°. The average high for September is 63° with an average low of 53°. 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 Barnstaple. See also: October | November | December.
