S
M
T
W
T
F
S
30
65°
52°
31
64°
54°
1
67°
53°
2
67°
54°
3
66°
52°
4
67°
49°
5
66°
50°
6
67°
54°
7
67°
54°
8
66°
53°
9
66°
54°
10
67°
54°
11
67°
55°
12
66°
52°
13
66°
49°
14
62°
51°
15
61°
52°
16
62°
53°
17
63°
51°
18
65°
50°
19
63°
51°
20
63°
52°
21
65°
52°
22
64°
51°
23
60°
48°
24
61°
52°
25
60°
47°
26
61°
47°
27
60°
48°
28
59°
52°
29
62°
50°
30
62°
50°
1
61°
51°
2
61°
49°
3
61°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lynemouth
Lynemouth's September 2026 forecast shows daily high temperatures ranging from 59° to 67°, with overnight lows between 47° and 55°. The average high for September is 64° with an average low of 51°. 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 Lynemouth. See also: October | November | December.