S
M
T
W
T
F
S
30
86°
58°
31
78°
60°
1
78°
65°
2
82°
62°
3
83°
63°
4
84°
63°
5
85°
56°
6
82°
57°
7
77°
55°
8
76°
54°
9
76°
59°
10
80°
58°
11
79°
54°
12
74°
54°
13
76°
53°
14
75°
60°
15
78°
53°
16
80°
52°
17
73°
50°
18
71°
50°
19
71°
51°
20
72°
53°
21
70°
54°
22
70°
53°
23
72°
56°
24
74°
53°
25
76°
58°
26
77°
57°
27
77°
48°
28
70°
54°
29
69°
57°
30
76°
54°
1
69°
55°
2
72°
53°
3
67°
48°
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 67° to 86°, with overnight lows between 48° and 65°. The average high for September is 76° with an average low of 55°. 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.