S
M
T
W
T
F
S
30
78°
64°
31
75°
65°
1
78°
65°
2
81°
60°
3
80°
55°
4
72°
57°
5
72°
64°
6
79°
58°
7
77°
55°
8
72°
57°
9
71°
59°
10
72°
62°
11
73°
61°
12
79°
62°
13
78°
61°
14
78°
54°
15
74°
53°
16
68°
56°
17
69°
52°
18
69°
51°
19
68°
48°
20
66°
48°
21
65°
50°
22
66°
56°
23
69°
49°
24
69°
56°
25
72°
57°
26
68°
56°
27
74°
57°
28
74°
53°
29
73°
50°
30
63°
51°
1
66°
52°
2
71°
53°
3
64°
44°
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 63° to 81°, with overnight lows between 44° and 65°. The average high for September is 72° with an average low of 56°. 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.