S
M
T
W
T
F
S
26
80°
67°
27
82°
68°
28
86°
69°
29
86°
69°
30
84°
68°
31
82°
69°
1
84°
68°
2
85°
69°
3
86°
69°
4
85°
68°
5
82°
67°
6
83°
68°
7
86°
67°
8
79°
63°
9
78°
61°
10
78°
61°
11
79°
67°
12
79°
67°
13
83°
68°
14
84°
68°
15
84°
66°
16
79°
64°
17
79°
59°
18
80°
58°
19
83°
66°
20
86°
65°
21
84°
66°
22
86°
65°
23
85°
63°
24
80°
62°
25
79°
63°
26
79°
59°
27
78°
60°
28
78°
61°
29
80°
62°
30
85°
61°
31
85°
64°
1
84°
65°
2
84°
63°
3
83°
55°
4
77°
54°
5
76°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sheffield
Sheffield's August 2026 forecast shows daily high temperatures ranging from 76° to 86°, with overnight lows between 54° and 69°. The average high for August is 82° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Sheffield. See also: September | October | November.