S
M
T
W
T
F
S
31
77°
47°
1
79°
48°
2
82°
52°
3
81°
51°
4
68°
48°
5
72°
52°
6
69°
44°
7
70°
41°
8
72°
40°
9
76°
41°
10
82°
55°
11
85°
61°
12
85°
52°
13
72°
56°
14
87°
62°
15
88°
59°
16
85°
56°
17
88°
53°
18
90°
55°
19
89°
57°
20
89°
61°
21
84°
65°
22
76°
64°
23
78°
61°
24
80°
62°
25
79°
53°
26
81°
48°
27
87°
52°
28
90°
55°
29
86°
56°
30
87°
56°
1
84°
53°
2
84°
53°
3
89°
55°
4
87°
63°
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.
