S
M
T
W
T
F
S
30
68°
57°
31
66°
52°
1
70°
50°
2
66°
57°
3
70°
63°
4
64°
55°
5
64°
54°
6
72°
54°
7
66°
59°
8
61°
54°
9
61°
48°
10
61°
53°
11
62°
48°
12
63°
53°
13
62°
54°
14
68°
54°
15
59°
48°
16
58°
49°
17
60°
50°
18
60°
50°
19
62°
49°
20
61°
48°
21
60°
49°
22
59°
50°
23
64°
52°
24
62°
51°
25
58°
51°
26
57°
50°
27
61°
52°
28
60°
46°
29
55°
45°
30
55°
46°
1
56°
51°
2
59°
50°
3
59°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Mills
New Mills's September 2026 forecast shows daily high temperatures ranging from 55° to 68°, with overnight lows between 45° and 54°. The average high for September is 60° with an average low of 50°. 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 New Mills. See also: October | November | December.