S
M
T
W
T
F
S
30
72°
57°
31
70°
54°
1
72°
52°
2
70°
57°
3
72°
63°
4
66°
59°
5
68°
48°
6
73°
46°
7
68°
57°
8
64°
55°
9
64°
50°
10
66°
43°
11
70°
50°
12
70°
50°
13
70°
55°
14
74°
62°
15
68°
50°
16
65°
52°
17
63°
48°
18
63°
54°
19
65°
50°
20
64°
52°
21
65°
51°
22
65°
51°
23
63°
52°
24
67°
50°
25
64°
48°
26
63°
52°
27
62°
51°
28
63°
52°
29
63°
51°
30
62°
50°
1
62°
49°
2
63°
50°
3
62°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Thornton-Le-Dale
Thornton-Le-Dale's September 2026 forecast shows daily high temperatures ranging from 62° to 74°, with overnight lows between 48° and 62°. The average high for September is 65° 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 Thornton-Le-Dale. See also: October | November | December.