S
M
T
W
T
F
S
30
79°
70°
31
90°
75°
1
94°
71°
2
98°
73°
3
97°
73°
4
96°
70°
5
93°
68°
6
86°
67°
7
85°
69°
8
91°
70°
9
89°
66°
10
82°
64°
11
79°
59°
12
78°
60°
13
74°
58°
14
76°
56°
15
77°
55°
16
82°
61°
17
81°
61°
18
74°
57°
19
76°
60°
20
80°
60°
21
79°
59°
22
79°
58°
23
76°
58°
24
77°
57°
25
78°
57°
26
72°
50°
27
67°
46°
28
65°
45°
29
66°
47°
30
66°
44°
1
65°
51°
2
66°
52°
3
65°
50°
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 65° to 98°, with overnight lows between 44° and 73°. The average high for September is 79° with an average low of 59°. 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.
