S
M
T
W
T
F
S
30
94°
74°
31
95°
76°
1
91°
75°
2
90°
75°
3
90°
76°
4
92°
75°
5
93°
76°
6
90°
75°
7
92°
75°
8
90°
73°
9
91°
75°
10
92°
76°
11
91°
74°
12
90°
72°
13
91°
72°
14
90°
73°
15
91°
75°
16
89°
75°
17
88°
74°
18
88°
75°
19
89°
75°
20
89°
74°
21
88°
74°
22
87°
73°
23
87°
73°
24
88°
72°
25
87°
74°
26
88°
73°
27
87°
74°
28
86°
74°
29
87°
73°
30
87°
73°
1
88°
72°
2
86°
73°
3
86°
72°
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 86° to 93°, with overnight lows between 72° and 76°. The average high for September is 89° with an average low of 74°. 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.
