S
M
T
W
T
F
S
30
95°
69°
31
90°
68°
1
93°
66°
2
90°
66°
3
91°
65°
4
93°
67°
5
90°
64°
6
94°
62°
7
89°
58°
8
Hist. Avg.
87°
59°
9
Hist. Avg.
87°
59°
10
Hist. Avg.
86°
59°
11
Hist. Avg.
86°
58°
12
Hist. Avg.
86°
58°
13
Hist. Avg.
85°
57°
14
Hist. Avg.
85°
57°
15
Hist. Avg.
85°
57°
16
Hist. Avg.
84°
56°
17
Hist. Avg.
84°
56°
18
Hist. Avg.
83°
55°
19
Hist. Avg.
83°
55°
20
Hist. Avg.
83°
55°
21
Hist. Avg.
82°
54°
22
Hist. Avg.
82°
54°
23
Hist. Avg.
81°
53°
24
Hist. Avg.
81°
53°
25
Hist. Avg.
81°
53°
26
Hist. Avg.
80°
52°
27
Hist. Avg.
80°
52°
28
Hist. Avg.
79°
51°
29
Hist. Avg.
79°
51°
30
Hist. Avg.
78°
50°
1
Hist. Avg.
78°
50°
2
Hist. Avg.
78°
50°
3
Hist. Avg.
77°
49°
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 89° to 95°, with overnight lows between 58° and 69°. The average high for September is 92° with an average low of 65°. 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.
