S
M
T
W
T
F
S
26
105°
80°
27
106°
81°
28
99°
81°
29
97°
79°
30
99°
79°
31
96°
76°
1
90°
68°
2
92°
69°
3
96°
67°
4
101°
74°
5
93°
69°
6
92°
72°
7
94°
69°
8
99°
70°
9
105°
77°
10
102°
76°
11
105°
79°
12
106°
80°
13
108°
81°
14
106°
77°
15
101°
77°
16
95°
75°
17
91°
71°
18
104°
69°
19
98°
73°
20
98°
73°
21
100°
73°
22
96°
70°
23
86°
69°
24
97°
72°
25
96°
70°
26
91°
70°
27
92°
72°
28
98°
74°
29
102°
75°
30
103°
76°
31
102°
74°
1
96°
66°
2
91°
67°
3
87°
66°
4
90°
68°
5
81°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Derby
Derby's August 2026 forecast shows daily high temperatures ranging from 81° to 103°, with overnight lows between 66° and 76°. The average high for August is 94° with an average low of 70°. 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 Derby. See also: September | October | November.