S
M
T
W
T
F
S
30
79°
61°
31
83°
61°
1
83°
62°
2
82°
61°
3
83°
55°
4
82°
52°
5
75°
54°
6
76°
59°
7
78°
59°
8
80°
58°
9
81°
59°
10
80°
58°
11
79°
57°
12
80°
57°
13
80°
58°
14
79°
59°
15
80°
58°
16
80°
53°
17
79°
57°
18
76°
55°
19
78°
53°
20
75°
49°
21
71°
47°
22
70°
53°
23
71°
52°
24
76°
47°
25
70°
46°
26
69°
46°
27
70°
51°
28
74°
52°
29
75°
48°
30
74°
48°
1
68°
51°
2
68°
44°
3
70°
44°
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 68° to 83°, with overnight lows between 44° and 62°. The average high for September is 76° with an average low of 54°. 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.