S
M
T
W
T
F
S
30
75°
52°
31
70°
48°
1
69°
51°
2
69°
49°
3
70°
54°
4
73°
56°
5
78°
57°
6
77°
57°
7
75°
51°
8
76°
53°
9
71°
55°
10
77°
49°
11
77°
48°
12
72°
55°
13
76°
51°
14
76°
43°
15
72°
40°
16
62°
41°
17
64°
44°
18
67°
51°
19
68°
52°
20
68°
52°
21
69°
51°
22
73°
51°
23
72°
52°
24
72°
52°
25
74°
51°
26
74°
52°
27
72°
37°
28
71°
36°
29
57°
40°
30
59°
38°
1
58°
39°
2
59°
40°
3
61°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Caledon
Caledon's September 2026 forecast shows daily high temperatures ranging from 57° to 78°, with overnight lows between 36° and 57°. The average high for September is 70° with an average low of 48°. 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 Caledon. See also: October | November | December.