S
M
T
W
T
F
S
28
92°
79°
29
93°
78°
30
N/A
1
92°
74°
2
91°
75°
3
96°
74°
4
96°
73°
5
93°
73°
6
92°
74°
7
94°
74°
8
95°
73°
9
96°
71°
10
95°
71°
11
94°
72°
12
97°
72°
13
97°
73°
14
92°
69°
15
94°
68°
16
85°
66°
17
95°
74°
18
97°
76°
19
98°
76°
20
98°
75°
21
97°
75°
22
97°
74°
23
99°
76°
24
98°
76°
25
98°
75°
26
97°
75°
27
98°
76°
28
98°
75°
29
96°
74°
30
97°
73°
31
95°
73°
1
91°
72°
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 85° to 99°, with overnight lows between 66° and 76°. The average high for July is 95° with an average low of 73°. 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.