S
M
T
W
T
F
S
30
65°
50°
31
64°
51°
1
67°
50°
2
68°
54°
3
68°
54°
4
67°
49°
5
66°
48°
6
64°
52°
7
66°
51°
8
67°
49°
9
67°
53°
10
66°
54°
11
67°
54°
12
66°
50°
13
64°
48°
14
62°
51°
15
61°
52°
16
62°
53°
17
62°
52°
18
65°
51°
19
62°
52°
20
64°
52°
21
66°
50°
22
64°
48°
23
59°
46°
24
59°
49°
25
60°
49°
26
60°
47°
27
59°
49°
28
58°
51°
29
61°
50°
30
61°
51°
1
62°
50°
2
63°
47°
3
58°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Newcastle-Under-Lyme
Newcastle-Under-Lyme's September 2026 forecast shows daily high temperatures ranging from 58° to 68°, with overnight lows between 45° and 54°. The average high for September is 63° 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 Newcastle-Under-Lyme. See also: October | November | December.