S
M
T
W
T
F
S
30
74°
62°
31
76°
61°
1
72°
58°
2
67°
57°
3
67°
56°
4
68°
57°
5
70°
60°
6
74°
61°
7
75°
60°
8
75°
60°
9
74°
59°
10
74°
59°
11
73°
58°
12
74°
59°
13
72°
60°
14
71°
47°
15
62°
49°
16
64°
48°
17
65°
51°
18
65°
47°
19
63°
50°
20
63°
53°
21
70°
54°
22
71°
52°
23
70°
46°
24
65°
43°
25
62°
48°
26
68°
52°
27
68°
52°
28
66°
44°
29
63°
40°
30
57°
43°
1
57°
50°
2
63°
49°
3
65°
50°
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 57° to 76°, with overnight lows between 40° and 62°. The average high for September is 68° with an average low of 53°. 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.