S
M
T
W
T
F
S
30
77°
53°
31
78°
55°
1
83°
56°
2
84°
51°
3
76°
44°
4
75°
46°
5
74°
49°
6
74°
50°
7
77°
52°
8
80°
53°
9
83°
54°
10
83°
53°
11
82°
53°
12
82°
51°
13
80°
52°
14
80°
52°
15
79°
51°
16
79°
50°
17
80°
40°
18
73°
43°
19
69°
40°
20
67°
40°
21
Hist. Avg.
72°
44°
22
Hist. Avg.
72°
44°
23
Hist. Avg.
71°
44°
24
Hist. Avg.
71°
43°
25
Hist. Avg.
70°
43°
26
Hist. Avg.
69°
42°
27
Hist. Avg.
69°
42°
28
Hist. Avg.
68°
42°
29
Hist. Avg.
68°
41°
30
Hist. Avg.
67°
41°
1
Hist. Avg.
66°
40°
2
Hist. Avg.
66°
40°
3
Hist. Avg.
65°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Buffalo
Buffalo's September 2026 forecast shows daily high temperatures ranging from 67° to 84°, with overnight lows between 40° and 56°. The average high for September is 78° with an average low of 49°. 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.
