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
76°
64°
2
81°
60°
3
83°
60°
4
84°
64°
5
80°
60°
6
80°
66°
7
82°
68°
8
83°
67°
9
84°
64°
10
84°
65°
11
79°
63°
12
81°
62°
13
80°
65°
14
82°
62°
15
77°
62°
16
79°
67°
17
87°
69°
18
86°
68°
19
87°
67°
20
85°
66°
21
85°
67°
22
84°
68°
23
85°
67°
24
84°
67°
25
82°
66°
26
83°
63°
27
81°
63°
28
83°
65°
29
83°
64°
30
84°
65°
31
84°
65°
1
83°
64°
2
83°
65°
3
84°
64°
4
83°
63°
5
83°
63°
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 76° to 87°, with overnight lows between 60° and 69°. The average high for August is 83° with an average low of 65°. 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.
