S
M
T
W
T
F
S
30
79°
56°
31
78°
57°
1
84°
51°
2
78°
50°
3
78°
51°
4
79°
49°
5
77°
49°
6
80°
54°
7
82°
53°
8
79°
54°
9
82°
54°
10
78°
53°
11
80°
53°
12
81°
52°
13
81°
53°
14
80°
53°
15
81°
52°
16
80°
45°
17
76°
48°
18
71°
52°
19
78°
51°
20
80°
51°
21
79°
49°
22
78°
42°
23
75°
47°
24
73°
47°
25
Hist. Avg.
72°
49°
26
Hist. Avg.
71°
48°
27
Hist. Avg.
71°
48°
28
Hist. Avg.
70°
48°
29
Hist. Avg.
70°
47°
30
Hist. Avg.
70°
47°
1
Hist. Avg.
69°
46°
2
Hist. Avg.
69°
46°
3
Hist. Avg.
68°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Kingston
Kingston's September 2026 forecast shows daily high temperatures ranging from 71° to 84°, with overnight lows between 42° and 57°. The average high for September is 79° 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.