S
M
T
W
T
F
S
28
80°
58°
29
80°
59°
30
81°
62°
1
82°
63°
2
82°
58°
3
81°
59°
4
79°
58°
5
78°
58°
6
80°
60°
7
81°
61°
8
80°
65°
9
81°
63°
10
81°
62°
11
84°
67°
12
86°
67°
13
84°
65°
14
84°
68°
15
87°
67°
16
88°
68°
17
89°
69°
18
89°
68°
19
88°
68°
20
90°
69°
21
89°
69°
22
89°
68°
23
88°
68°
24
88°
60°
25
87°
60°
26
79°
61°
27
79°
59°
28
80°
60°
29
80°
61°
30
81°
66°
31
80°
62°
1
80°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Dubuque
Dubuque's July 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 58° and 69°. The average high for July is 83° with an average low of 63°. 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 Dubuque. See also: August | September | October.