S
M
T
W
T
F
S
30
88°
63°
31
89°
68°
1
87°
67°
2
87°
61°
3
86°
60°
4
84°
60°
5
85°
61°
6
86°
65°
7
88°
68°
8
92°
68°
9
92°
67°
10
88°
63°
11
89°
66°
12
87°
67°
13
90°
59°
14
86°
58°
15
83°
58°
16
85°
59°
17
84°
58°
18
85°
59°
19
86°
58°
20
88°
61°
21
88°
63°
22
87°
63°
23
81°
62°
24
82°
62°
25
80°
61°
26
86°
61°
27
86°
59°
28
85°
60°
29
86°
60°
30
86°
59°
1
87°
60°
2
87°
53°
3
86°
51°
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 80° to 92°, with overnight lows between 51° and 68°. The average high for September is 86° with an average low of 61°. 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.
