S
M
T
W
T
F
S
30
75°
59°
31
78°
62°
1
76°
58°
2
81°
53°
3
74°
52°
4
72°
52°
5
72°
53°
6
74°
57°
7
80°
61°
8
82°
62°
9
81°
54°
10
74°
55°
11
74°
60°
12
75°
56°
13
80°
51°
14
72°
50°
15
70°
49°
16
71°
53°
17
74°
56°
18
78°
47°
19
70°
56°
20
72°
50°
21
73°
56°
22
70°
56°
23
77°
57°
24
77°
56°
25
76°
57°
26
76°
56°
27
77°
56°
28
77°
54°
29
75°
55°
30
75°
55°
1
76°
49°
2
75°
44°
3
73°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in East Dubuque
East Dubuque's September 2026 forecast shows daily high temperatures ranging from 70° to 82°, with overnight lows between 44° and 62°. The average high for September is 75° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in East Dubuque. See also: October | November | December.