S
M
T
W
T
F
S
30
76°
55°
31
75°
55°
1
75°
54°
2
74°
54°
3
75°
52°
4
74°
49°
5
69°
50°
6
71°
53°
7
72°
51°
8
73°
53°
9
71°
52°
10
71°
50°
11
70°
48°
12
71°
51°
13
70°
50°
14
68°
50°
15
69°
47°
16
69°
45°
17
66°
44°
18
65°
47°
19
65°
49°
20
66°
48°
21
65°
45°
22
66°
46°
23
64°
47°
24
65°
48°
25
65°
48°
26
66°
50°
27
Hist. Avg.
62°
50°
28
Hist. Avg.
62°
50°
29
Hist. Avg.
61°
49°
30
Hist. Avg.
61°
49°
1
Hist. Avg.
61°
49°
2
Hist. Avg.
61°
49°
3
Hist. Avg.
60°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Sittingbourne
Sittingbourne's September 2026 forecast shows daily high temperatures ranging from 64° to 76°, with overnight lows between 44° and 55°. The average high for September is 70° 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.