S
M
T
W
T
F
S
30
74°
51°
31
72°
49°
1
72°
48°
2
71°
53°
3
62°
56°
4
67°
52°
5
67°
47°
6
70°
47°
7
71°
51°
8
69°
48°
9
67°
52°
10
70°
51°
11
70°
50°
12
68°
52°
13
67°
50°
14
69°
38°
15
64°
51°
16
69°
50°
17
69°
50°
18
61°
44°
19
61°
42°
20
66°
48°
21
69°
50°
22
69°
49°
23
70°
49°
24
67°
48°
25
67°
48°
26
68°
46°
27
66°
47°
28
67°
44°
29
58°
41°
30
55°
39°
1
54°
38°
2
54°
43°
3
58°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Caribou
Caribou's September 2026 forecast shows daily high temperatures ranging from 54° to 72°, with overnight lows between 38° and 56°. The average high for September is 66° with an average low of 47°. 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 Caribou. See also: October | November | December.
