S
M
T
W
T
F
S
30
85°
67°
31
91°
72°
1
94°
72°
2
94°
72°
3
94°
70°
4
87°
70°
5
84°
64°
6
82°
64°
7
82°
63°
8
83°
61°
9
81°
60°
10
83°
64°
11
80°
57°
12
78°
58°
13
80°
59°
14
79°
56°
15
82°
61°
16
82°
61°
17
81°
60°
18
80°
60°
19
82°
59°
20
82°
61°
21
81°
60°
22
82°
60°
23
82°
59°
24
81°
60°
25
81°
59°
26
79°
57°
27
80°
58°
28
80°
58°
29
79°
57°
30
78°
55°
1
77°
55°
2
77°
54°
3
78°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kettering
Kettering's September 2026 forecast shows daily high temperatures ranging from 77° to 94°, with overnight lows between 54° and 72°. The average high for September is 82° with an average low of 61°. 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 Kettering. See also: October | November | December.