S
M
T
W
T
F
S
26
82°
60°
27
85°
66°
28
79°
67°
29
78°
65°
30
82°
59°
31
85°
62°
1
82°
69°
2
80°
68°
3
75°
58°
4
81°
52°
5
86°
58°
6
85°
65°
7
81°
68°
8
85°
68°
9
82°
61°
10
83°
67°
11
75°
65°
12
75°
63°
13
77°
63°
14
81°
65°
15
79°
62°
16
83°
71°
17
78°
62°
18
79°
61°
19
79°
65°
20
79°
59°
21
82°
53°
22
81°
60°
23
73°
60°
24
73°
54°
25
77°
58°
26
82°
63°
27
78°
61°
28
76°
56°
29
79°
58°
30
85°
68°
31
89°
69°
1
78°
58°
2
75°
58°
3
75°
59°
4
77°
58°
5
78°
59°
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 75° to 89°, with overnight lows between 56° and 69°. The average high for August is 79° with an average low of 60°. 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.