S
M
T
W
T
F
S
30
67°
50°
31
66°
49°
1
68°
50°
2
69°
53°
3
70°
54°
4
69°
49°
5
67°
48°
6
65°
50°
7
67°
50°
8
69°
49°
9
70°
53°
10
70°
53°
11
69°
54°
12
69°
49°
13
66°
46°
14
64°
50°
15
63°
51°
16
64°
53°
17
64°
53°
18
68°
52°
19
67°
53°
20
67°
53°
21
68°
49°
22
67°
46°
23
62°
45°
24
62°
45°
25
63°
46°
26
64°
47°
27
63°
48°
28
61°
52°
29
64°
51°
30
64°
50°
1
65°
51°
2
66°
50°
3
65°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chailey
Chailey's September 2026 forecast shows daily high temperatures ranging from 61° to 70°, with overnight lows between 45° and 54°. The average high for September is 66° 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 Chailey. See also: October | November | December.