S
M
T
W
T
F
S
30
67°
49°
31
66°
48°
1
69°
49°
2
70°
52°
3
70°
53°
4
68°
48°
5
66°
47°
6
65°
48°
7
68°
50°
8
69°
47°
9
69°
52°
10
68°
52°
11
69°
51°
12
69°
48°
13
66°
45°
14
64°
49°
15
63°
50°
16
62°
51°
17
63°
51°
18
67°
50°
19
66°
51°
20
66°
51°
21
67°
47°
22
66°
45°
23
61°
43°
24
61°
44°
25
62°
45°
26
61°
45°
27
62°
46°
28
60°
50°
29
63°
49°
30
63°
48°
1
64°
49°
2
65°
48°
3
63°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lower Sundon
Lower Sundon's September 2026 forecast shows daily high temperatures ranging from 60° to 70°, with overnight lows between 43° and 53°. The average high for September is 65° with an average low of 49°. 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 Lower Sundon. See also: October | November | December.