S
M
T
W
T
F
S
30
75°
50°
31
72°
48°
1
69°
51°
2
71°
48°
3
70°
50°
4
71°
50°
5
70°
51°
6
70°
53°
7
71°
52°
8
70°
51°
9
71°
49°
10
70°
50°
11
68°
51°
12
68°
51°
13
69°
52°
14
71°
48°
15
70°
53°
16
73°
51°
17
74°
53°
18
75°
53°
19
75°
54°
20
Hist. Avg.
70°
50°
21
Hist. Avg.
70°
50°
22
Hist. Avg.
70°
49°
23
Hist. Avg.
69°
49°
24
Hist. Avg.
69°
49°
25
Hist. Avg.
68°
48°
26
Hist. Avg.
68°
48°
27
Hist. Avg.
67°
48°
28
Hist. Avg.
67°
47°
29
Hist. Avg.
66°
47°
30
Hist. Avg.
66°
46°
1
Hist. Avg.
66°
46°
2
Hist. Avg.
65°
46°
3
Hist. Avg.
65°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Interlochen
Interlochen's September 2026 forecast shows daily high temperatures ranging from 68° to 75°, with overnight lows between 48° and 54°. The average high for September is 71° with an average low of 51°. 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 Interlochen. See also: October | November | December.
