S
M
T
W
T
F
S
30
94°
67°
31
97°
72°
1
98°
72°
2
99°
74°
3
100°
74°
4
100°
74°
5
101°
75°
6
89°
71°
7
87°
65°
8
95°
64°
9
98°
75°
10
82°
74°
11
86°
71°
12
89°
72°
13
93°
65°
14
87°
66°
15
98°
73°
16
98°
72°
17
98°
70°
18
94°
66°
19
94°
68°
20
81°
62°
21
82°
60°
22
78°
60°
23
79°
59°
24
82°
60°
25
84°
61°
26
81°
54°
27
85°
59°
28
84°
60°
29
85°
59°
30
85°
60°
1
84°
60°
2
84°
59°
3
83°
59°
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 78° to 98°, with overnight lows between 54° and 73°. The average high for September is 87° 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.
