S
M
T
W
T
F
S
26
90°
71°
27
93°
76°
28
85°
69°
29
85°
63°
30
81°
59°
31
71°
66°
1
75°
64°
2
82°
63°
3
82°
59°
4
82°
63°
5
70°
63°
6
80°
62°
7
82°
65°
8
79°
58°
9
80°
61°
10
85°
69°
11
82°
66°
12
83°
71°
13
76°
68°
14
75°
66°
15
76°
69°
16
82°
63°
17
80°
60°
18
80°
60°
19
81°
60°
20
79°
59°
21
82°
63°
22
78°
59°
23
74°
55°
24
78°
51°
25
77°
55°
26
80°
63°
27
80°
56°
28
81°
54°
29
76°
60°
30
77°
67°
31
87°
71°
1
91°
69°
2
89°
71°
3
91°
74°
4
91°
73°
5
83°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Dubuque
Dubuque's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Dubuque. See also: September | October | November.
