S
M
T
W
T
F
S
30
79°
60°
31
84°
65°
1
85°
66°
2
83°
65°
3
84°
58°
4
78°
56°
5
77°
58°
6
79°
64°
7
84°
64°
8
82°
63°
9
77°
62°
10
79°
63°
11
83°
62°
12
83°
63°
13
82°
63°
14
83°
62°
15
82°
62°
16
82°
61°
17
81°
57°
18
75°
53°
19
73°
51°
20
73°
50°
21
71°
50°
22
71°
52°
23
72°
52°
24
76°
51°
25
73°
57°
26
76°
58°
27
77°
57°
28
77°
56°
29
76°
55°
30
77°
55°
1
73°
52°
2
75°
56°
3
69°
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 69° to 85°, with overnight lows between 49° and 66°. The average high for September is 78° with an average low of 58°. 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.