S
M
T
W
T
F
S
26
76°
44°
27
66°
43°
28
66°
47°
29
75°
49°
30
67°
46°
1
67°
49°
2
68°
50°
3
72°
55°
4
69°
56°
5
76°
56°
6
78°
57°
7
78°
57°
8
75°
54°
9
79°
54°
10
79°
59°
11
81°
60°
12
81°
60°
13
80°
59°
14
72°
55°
15
77°
60°
16
74°
58°
17
79°
52°
18
74°
53°
19
73°
52°
20
76°
54°
21
80°
62°
22
82°
54°
23
84°
53°
24
74°
52°
25
76°
55°
26
77°
54°
27
76°
56°
28
79°
64°
29
78°
62°
30
86°
64°
31
87°
64°
1
87°
57°
2
80°
56°
3
79°
56°
4
79°
57°
5
83°
59°
6
86°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Derby
Derby's May 2026 forecast shows daily high temperatures ranging from 66° to 87°, with overnight lows between 43° and 65°. The average high for May is 77° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Derby. See also: June | July | August.