S
M
T
W
T
F
S
30
79°
65°
31
82°
64°
1
85°
64°
2
85°
63°
3
84°
56°
4
77°
63°
5
78°
63°
6
84°
60°
7
81°
55°
8
74°
54°
9
76°
61°
10
75°
62°
11
81°
61°
12
82°
62°
13
83°
60°
14
81°
52°
15
75°
53°
16
72°
57°
17
72°
51°
18
73°
50°
19
72°
47°
20
71°
48°
21
70°
52°
22
71°
56°
23
76°
54°
24
77°
57°
25
78°
57°
26
77°
56°
27
78°
57°
28
76°
52°
29
75°
51°
30
69°
52°
1
72°
51°
2
76°
53°
3
68°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Davenport
Davenport's September 2026 forecast shows daily high temperatures ranging from 68° to 85°, with overnight lows between 44° and 65°. The average high for September is 77° with an average low of 56°. 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 Davenport. See also: October | November | December.
