S
M
T
W
T
F
S
28
82°
61°
29
86°
60°
30
85°
63°
1
91°
66°
2
102°
75°
3
101°
76°
4
94°
70°
5
89°
69°
6
78°
65°
7
75°
62°
8
81°
66°
9
85°
67°
10
84°
66°
11
86°
66°
12
85°
65°
13
84°
65°
14
82°
67°
15
84°
63°
16
78°
61°
17
79°
63°
18
79°
63°
19
82°
65°
20
81°
66°
21
78°
66°
22
78°
65°
23
79°
66°
24
79°
66°
25
80°
65°
26
81°
65°
27
82°
67°
28
83°
66°
29
81°
67°
30
83°
68°
31
85°
68°
1
84°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Derby
Derby's July 2026 forecast shows daily high temperatures ranging from 75° to 102°, with overnight lows between 61° and 76°. The average high for July is 83° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Derby. See also: August | September | October.