S
M
T
W
T
F
S
30
81°
62°
31
88°
71°
1
89°
73°
2
93°
71°
3
94°
73°
4
84°
70°
5
83°
68°
6
79°
59°
7
80°
57°
8
86°
60°
9
89°
71°
10
83°
68°
11
81°
62°
12
78°
66°
13
87°
61°
14
74°
51°
15
N/A
16
86°
70°
17
83°
66°
18
76°
56°
19
80°
67°
20
75°
60°
21
77°
60°
22
77°
61°
23
76°
60°
24
75°
53°
25
72°
50°
26
74°
51°
27
71°
51°
28
74°
47°
29
76°
53°
30
76°
54°
1
75°
53°
2
75°
52°
3
73°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Kilbourne
Kilbourne's September 2026 forecast shows daily high temperatures ranging from 71° to 86°, with overnight lows between 47° and 70°. The average high for September is 76° with an average low of 56°. 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 Kilbourne. See also: October | November | December.