S
M
T
W
T
F
S
30
90°
71°
31
92°
72°
1
91°
72°
2
92°
71°
3
91°
72°
4
92°
72°
5
92°
71°
6
91°
72°
7
91°
71°
8
90°
72°
9
90°
72°
10
91°
71°
11
92°
72°
12
91°
71°
13
92°
72°
14
91°
71°
15
92°
71°
16
91°
71°
17
92°
71°
18
Hist. Avg.
91°
69°
19
Hist. Avg.
91°
68°
20
Hist. Avg.
91°
68°
21
Hist. Avg.
91°
68°
22
Hist. Avg.
91°
68°
23
Hist. Avg.
91°
68°
24
Hist. Avg.
91°
68°
25
Hist. Avg.
91°
68°
26
Hist. Avg.
91°
68°
27
Hist. Avg.
91°
68°
28
Hist. Avg.
91°
68°
29
Hist. Avg.
91°
68°
30
Hist. Avg.
91°
68°
1
Hist. Avg.
91°
68°
2
Hist. Avg.
91°
68°
3
Hist. Avg.
91°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Búfalo
Búfalo's September 2026 forecast shows daily high temperatures ranging from 90° to 92°, with overnight lows between 71° and 72°. The average high for September is 91° with an average low of 71°. 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 Búfalo. See also: October | November | December.