S
M
T
W
T
F
S
31
68°
57°
1
88°
59°
2
86°
55°
3
70°
51°
4
69°
44°
5
61°
38°
6
71°
34°
7
80°
43°
8
87°
55°
9
84°
52°
10
87°
55°
11
93°
60°
12
87°
59°
13
80°
60°
14
72°
58°
15
84°
54°
16
75°
50°
17
67°
54°
18
66°
51°
19
71°
47°
20
77°
44°
21
81°
50°
22
78°
50°
23
76°
47°
24
82°
49°
25
81°
48°
26
81°
47°
27
81°
42°
28
87°
49°
29
79°
52°
30
87°
57°
1
79°
53°
2
86°
52°
3
93°
52°
4
64°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Buffalo
Buffalo's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Buffalo. See also: October | November | December.
