S
M
T
W
T
F
S
30
73°
58°
31
74°
63°
1
73°
66°
2
78°
61°
3
74°
55°
4
71°
56°
5
70°
55°
6
71°
58°
7
75°
60°
8
78°
63°
9
78°
63°
10
79°
57°
11
71°
60°
12
72°
60°
13
71°
54°
14
70°
54°
15
67°
53°
16
68°
52°
17
70°
60°
18
73°
50°
19
68°
52°
20
69°
50°
21
71°
53°
22
68°
58°
23
74°
59°
24
75°
58°
25
71°
59°
26
74°
59°
27
74°
58°
28
75°
55°
29
73°
56°
30
71°
58°
1
74°
55°
2
74°
47°
3
72°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Buffalo
New Buffalo's September 2026 forecast shows daily high temperatures ranging from 67° to 79°, with overnight lows between 45° and 66°. The average high for September is 73° with an average low of 57°. 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 New Buffalo. See also: October | November | December.
