S
M
T
W
T
F
S
30
75°
53°
31
77°
50°
1
77°
45°
2
69°
44°
3
68°
46°
4
73°
52°
5
75°
53°
6
76°
45°
7
71°
44°
8
70°
47°
9
71°
51°
10
66°
51°
11
71°
50°
12
72°
49°
13
70°
49°
14
65°
42°
15
64°
41°
16
64°
39°
17
65°
45°
18
65°
42°
19
64°
48°
20
68°
49°
21
69°
44°
22
64°
37°
23
63°
42°
24
62°
45°
25
61°
38°
26
62°
40°
27
66°
44°
28
Hist. Avg.
66°
41°
29
Hist. Avg.
65°
41°
30
Hist. Avg.
65°
41°
1
Hist. Avg.
64°
40°
2
Hist. Avg.
64°
40°
3
Hist. Avg.
64°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Killington
Killington's September 2026 forecast shows daily high temperatures ranging from 61° to 77°, with overnight lows between 37° and 53°. The average high for September is 68° 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.