S
M
T
W
T
F
S
30
71°
60°
31
68°
57°
1
69°
54°
2
66°
57°
3
72°
64°
4
66°
59°
5
68°
56°
6
73°
53°
7
68°
61°
8
N/A
9
65°
49°
10
65°
55°
11
65°
49°
12
67°
58°
13
67°
54°
14
71°
59°
15
66°
51°
16
63°
50°
17
64°
51°
18
64°
50°
19
65°
49°
20
64°
50°
21
65°
54°
22
66°
53°
23
65°
53°
24
65°
51°
25
63°
48°
26
62°
46°
27
61°
46°
28
62°
50°
29
61°
51°
30
62°
47°
1
61°
48°
2
62°
49°
3
62°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Grimethorpe
Grimethorpe's September 2026 forecast shows daily high temperatures ranging from 61° to 71°, with overnight lows between 46° and 59°. 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 Grimethorpe. See also: October | November | December.
