S
M
T
W
T
F
S
30
76°
50°
31
76°
50°
1
77°
52°
2
76°
53°
3
77°
53°
4
76°
56°
5
75°
56°
6
79°
57°
7
83°
57°
8
82°
56°
9
79°
55°
10
78°
55°
11
78°
56°
12
76°
55°
13
78°
54°
14
72°
53°
15
71°
53°
16
72°
51°
17
71°
50°
18
75°
52°
19
74°
51°
20
74°
49°
21
82°
51°
22
81°
43°
23
77°
41°
24
71°
40°
25
70°
47°
26
69°
49°
27
75°
50°
28
76°
47°
29
77°
44°
30
77°
46°
1
75°
48°
2
75°
46°
3
76°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kingston
Kingston's September 2026 forecast shows daily high temperatures ranging from 69° to 83°, with overnight lows between 40° and 57°. The average high for September is 76° with an average low of 51°. 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 Kingston. See also: October | November | December.