S
M
T
W
T
F
S
26
70°
44°
27
71°
50°
28
61°
46°
29
55°
41°
30
54°
39°
1
53°
34°
2
60°
46°
3
70°
44°
4
75°
45°
5
57°
38°
6
54°
37°
7
54°
40°
8
60°
44°
9
66°
47°
10
63°
46°
11
68°
47°
12
69°
50°
13
68°
52°
14
66°
49°
15
71°
50°
16
73°
56°
17
74°
55°
18
73°
55°
19
74°
53°
20
72°
55°
21
69°
46°
22
65°
46°
23
66°
47°
24
68°
47°
25
67°
48°
26
67°
48°
27
68°
49°
28
69°
49°
29
70°
55°
30
74°
59°
31
73°
56°
1
72°
54°
2
77°
58°
3
76°
59°
4
79°
61°
5
80°
62°
6
78°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Dubuque
Dubuque's May 2026 forecast shows daily high temperatures ranging from 54° to 80°, with overnight lows between 37° and 63°. The average high for May is 69° with an average low of 50°. 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 Dubuque. See also: June | July | August.
