S
M
T
W
T
F
S
30
74°
54°
31
75°
53°
1
71°
49°
2
66°
49°
3
66°
47°
4
67°
44°
5
67°
48°
6
73°
53°
7
74°
52°
8
74°
52°
9
71°
51°
10
72°
52°
11
73°
51°
12
72°
52°
13
73°
53°
14
74°
41°
15
64°
41°
16
64°
40°
17
65°
42°
18
73°
48°
19
71°
47°
20
73°
45°
21
68°
38°
22
64°
35°
23
60°
34°
24
61°
38°
25
66°
46°
26
60°
45°
27
68°
46°
28
68°
46°
29
67°
45°
30
70°
45°
1
69°
44°
2
68°
38°
3
66°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Killington
Killington's September 2026 forecast shows daily high temperatures ranging from 60° to 75°, with overnight lows between 34° and 54°. The average high for September is 69° with an average low of 46°. 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 Killington. See also: October | November | December.