S
M
T
W
T
F
S
30
64°
55°
31
64°
56°
1
65°
58°
2
66°
56°
3
65°
53°
4
63°
56°
5
63°
57°
6
64°
57°
7
67°
56°
8
67°
54°
9
66°
53°
10
66°
54°
11
62°
55°
12
65°
51°
13
66°
56°
14
66°
53°
15
65°
50°
16
62°
53°
17
65°
51°
18
65°
50°
19
64°
56°
20
65°
56°
21
65°
55°
22
62°
56°
23
62°
53°
24
61°
55°
25
60°
55°
26
62°
54°
27
64°
55°
28
63°
53°
29
62°
52°
30
59°
47°
1
58°
54°
2
62°
50°
3
Hist. Avg.
60°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lynmouth
Lynmouth's September 2026 forecast shows daily high temperatures ranging from 58° to 67°, with overnight lows between 47° and 58°. The average high for September is 64° with an average low of 54°. 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 Lynmouth. See also: October | November | December.
