S
M
T
W
T
F
S
30
95°
70°
31
94°
70°
1
94°
69°
2
93°
69°
3
93°
68°
4
92°
68°
5
91°
66°
6
92°
67°
7
93°
68°
8
91°
66°
9
88°
65°
10
90°
67°
11
91°
67°
12
92°
68°
13
92°
67°
14
92°
68°
15
Hist. Avg.
89°
65°
16
Hist. Avg.
89°
65°
17
Hist. Avg.
89°
64°
18
Hist. Avg.
88°
64°
19
Hist. Avg.
88°
64°
20
Hist. Avg.
88°
64°
21
Hist. Avg.
88°
63°
22
Hist. Avg.
88°
63°
23
Hist. Avg.
87°
62°
24
Hist. Avg.
87°
62°
25
Hist. Avg.
87°
62°
26
Hist. Avg.
86°
61°
27
Hist. Avg.
86°
61°
28
Hist. Avg.
86°
61°
29
Hist. Avg.
86°
60°
30
Hist. Avg.
85°
60°
1
Hist. Avg.
85°
60°
2
Hist. Avg.
85°
59°
3
Hist. Avg.
84°
59°
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 88° to 95°, with overnight lows between 65° and 70°. The average high for September is 92° with an average low of 68°. 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.
