S
M
T
W
T
F
S
30
84°
54°
31
80°
52°
1
77°
51°
2
77°
52°
3
78°
53°
4
78°
52°
5
76°
53°
6
74°
58°
7
76°
58°
8
81°
52°
9
75°
51°
10
75°
50°
11
74°
50°
12
75°
52°
13
74°
53°
14
73°
50°
15
74°
55°
16
74°
50°
17
76°
49°
18
76°
49°
19
72°
56°
20
74°
51°
21
76°
49°
22
Hist. Avg.
76°
50°
23
Hist. Avg.
75°
49°
24
Hist. Avg.
75°
49°
25
Hist. Avg.
74°
48°
26
Hist. Avg.
74°
48°
27
Hist. Avg.
73°
48°
28
Hist. Avg.
73°
47°
29
Hist. Avg.
72°
47°
30
Hist. Avg.
72°
46°
1
Hist. Avg.
72°
46°
2
Hist. Avg.
71°
46°
3
Hist. Avg.
71°
45°
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 72° to 84°, with overnight lows between 49° and 58°. The average high for September is 76° with an average low of 52°. 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.