S
M
T
W
T
F
S
30
94°
67°
31
97°
72°
1
98°
72°
2
101°
73°
3
102°
73°
4
100°
72°
5
96°
72°
6
93°
69°
7
95°
68°
8
95°
70°
9
96°
72°
10
95°
68°
11
88°
66°
12
88°
65°
13
86°
64°
14
85°
62°
15
84°
58°
16
82°
64°
17
84°
63°
18
79°
62°
19
78°
63°
20
79°
62°
21
84°
62°
22
86°
61°
23
82°
59°
24
79°
60°
25
85°
61°
26
81°
54°
27
75°
50°
28
74°
49°
29
73°
48°
30
73°
51°
1
74°
50°
2
74°
56°
3
75°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Owensboro
Owensboro's September 2026 forecast shows daily high temperatures ranging from 73° to 102°, with overnight lows between 48° and 73°. The average high for September is 85° with an average low of 62°. 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 Owensboro. See also: October | November | December.
