S
M
T
W
T
F
S
30
72°
60°
31
73°
57°
1
77°
65°
2
76°
65°
3
80°
60°
4
77°
59°
5
75°
57°
6
72°
53°
7
77°
51°
8
74°
56°
9
73°
64°
10
76°
52°
11
67°
46°
12
75°
49°
13
80°
58°
14
69°
50°
15
69°
47°
16
71°
62°
17
72°
54°
18
69°
49°
19
63°
46°
20
67°
46°
21
61°
48°
22
62°
44°
23
66°
46°
24
66°
47°
25
71°
49°
26
69°
50°
27
68°
49°
28
65°
50°
29
65°
54°
30
68°
53°
1
69°
52°
2
63°
45°
3
60°
51°
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 60° to 71°, with overnight lows between 44° and 54°. The average high for September is 66° with an average low of 49°. 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.