S
M
T
W
T
F
S
30
80°
63°
31
88°
71°
1
88°
73°
2
93°
71°
3
95°
71°
4
85°
68°
5
86°
61°
6
79°
56°
7
81°
56°
8
86°
57°
9
89°
70°
10
85°
65°
11
82°
65°
12
79°
64°
13
84°
52°
14
73°
56°
15
85°
65°
16
86°
66°
17
76°
57°
18
74°
53°
19
69°
50°
20
71°
51°
21
69°
50°
22
74°
52°
23
75°
54°
24
74°
40°
25
69°
55°
26
76°
55°
27
77°
54°
28
76°
54°
29
73°
53°
30
73°
54°
1
74°
52°
2
68°
53°
3
74°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Caledonia
Caledonia's September 2026 forecast shows daily high temperatures ranging from 68° to 86°, with overnight lows between 40° and 66°. The average high for September is 75° with an average low of 55°. 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 Caledonia. See also: October | November | December.