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
81°
65°
8
86°
63°
9
81°
52°
10
80°
56°
11
81°
58°
12
78°
53°
13
69°
56°
14
70°
51°
15
72°
53°
16
75°
54°
17
76°
52°
18
73°
51°
19
68°
50°
20
74°
48°
21
74°
54°
22
76°
53°
23
77°
54°
24
76°
55°
25
75°
54°
26
75°
54°
27
77°
53°
28
75°
54°
29
73°
54°
30
74°
51°
1
70°
46°
2
62°
42°
3
61°
39°
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 61° to 86°, with overnight lows between 39° and 65°. The average high for September is 74° 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.