S
M
T
W
T
F
S
30
86°
54°
31
81°
53°
1
77°
53°
2
78°
60°
3
79°
53°
4
82°
60°
5
78°
60°
6
84°
54°
7
82°
53°
8
75°
52°
9
76°
51°
10
75°
57°
11
76°
51°
12
80°
49°
13
73°
50°
14
72°
56°
15
76°
57°
16
78°
47°
17
80°
47°
18
70°
46°
19
69°
47°
20
70°
47°
21
70°
48°
22
68°
48°
23
67°
49°
24
69°
50°
25
71°
50°
26
74°
52°
27
74°
49°
28
75°
43°
29
67°
43°
30
65°
49°
1
66°
50°
2
71°
51°
3
70°
49°
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 65° to 86°, with overnight lows between 43° and 60°. The average high for September is 74° 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.