S
M
T
W
T
F
S
30
63°
58°
31
65°
59°
1
68°
57°
2
69°
57°
3
68°
56°
4
67°
56°
5
69°
55°
6
67°
56°
7
66°
53°
8
63°
54°
9
65°
53°
10
64°
54°
11
64°
54°
12
66°
54°
13
62°
52°
14
Hist. Avg.
63°
51°
15
Hist. Avg.
63°
51°
16
Hist. Avg.
63°
51°
17
Hist. Avg.
62°
50°
18
Hist. Avg.
62°
50°
19
Hist. Avg.
62°
50°
20
Hist. Avg.
62°
50°
21
Hist. Avg.
62°
50°
22
Hist. Avg.
61°
50°
23
Hist. Avg.
61°
49°
24
Hist. Avg.
61°
49°
25
Hist. Avg.
61°
49°
26
Hist. Avg.
61°
49°
27
Hist. Avg.
61°
49°
28
Hist. Avg.
60°
49°
29
Hist. Avg.
60°
48°
30
Hist. Avg.
60°
48°
1
Hist. Avg.
60°
48°
2
Hist. Avg.
60°
48°
3
Hist. Avg.
59°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Cleethorpes
Cleethorpes's September 2026 forecast shows daily high temperatures ranging from 62° to 69°, with overnight lows between 52° and 59°. The average high for September is 66° with an average low of 55°. 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 Cleethorpes. See also: October | November | December.