S
M
T
W
T
F
S
30
71°
51°
31
72°
53°
1
70°
54°
2
72°
51°
3
72°
50°
4
70°
51°
5
70°
54°
6
69°
48°
7
71°
51°
8
70°
51°
9
72°
53°
10
73°
50°
11
70°
53°
12
69°
49°
13
71°
52°
14
71°
51°
15
70°
45°
16
67°
47°
17
68°
46°
18
69°
51°
19
70°
52°
20
70°
53°
21
69°
51°
22
70°
51°
23
69°
49°
24
67°
50°
25
67°
50°
26
66°
49°
27
67°
50°
28
66°
49°
29
68°
48°
30
62°
43°
1
62°
50°
2
63°
48°
3
Hist. Avg.
60°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sittingbourne
Sittingbourne's September 2026 forecast shows daily high temperatures ranging from 62° to 73°, with overnight lows between 43° and 54°. The average high for September is 69° with an average low of 50°. 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 Sittingbourne. See also: October | November | December.