S
M
T
W
T
F
S
30
81°
66°
31
87°
67°
1
87°
62°
2
87°
66°
3
87°
70°
4
90°
71°
5
82°
67°
6
73°
67°
7
78°
66°
8
81°
65°
9
83°
56°
10
80°
52°
11
80°
63°
12
77°
49°
13
65°
52°
14
74°
62°
15
69°
51°
16
69°
56°
17
73°
53°
18
70°
52°
19
70°
51°
20
72°
49°
21
73°
53°
22
74°
54°
23
73°
52°
24
72°
47°
25
78°
55°
26
76°
54°
27
77°
54°
28
74°
53°
29
73°
52°
30
75°
50°
1
66°
49°
2
72°
50°
3
72°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sheffield
Sheffield's September 2026 forecast shows daily high temperatures ranging from 65° to 80°, with overnight lows between 47° and 63°. The average high for September is 73° with an average low of 53°. 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 Sheffield. See also: October | November | December.