S
M
T
W
T
F
S
30
75°
61°
31
72°
57°
1
73°
54°
2
70°
57°
3
77°
64°
4
69°
57°
5
70°
55°
6
77°
55°
7
75°
61°
8
64°
50°
9
67°
50°
10
70°
58°
11
70°
47°
12
73°
59°
13
74°
57°
14
79°
61°
15
72°
52°
16
67°
50°
17
67°
51°
18
67°
50°
19
68°
51°
20
69°
50°
21
68°
52°
22
68°
51°
23
67°
51°
24
68°
50°
25
67°
47°
26
64°
46°
27
64°
46°
28
65°
49°
29
64°
48°
30
65°
48°
1
64°
43°
2
65°
48°
3
65°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cottenham
Cottenham's September 2026 forecast shows daily high temperatures ranging from 64° to 79°, with overnight lows between 43° and 61°. The average high for September is 68° 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 Cottenham. See also: October | November | December.