S
M
T
W
T
F
S
30
82°
60°
31
83°
61°
1
87°
60°
2
82°
59°
3
81°
65°
4
87°
64°
5
86°
65°
6
86°
63°
7
81°
58°
8
80°
60°
9
83°
63°
10
80°
63°
11
83°
64°
12
84°
62°
13
84°
56°
14
78°
54°
15
77°
54°
16
77°
55°
17
78°
57°
18
82°
60°
19
82°
60°
20
83°
61°
21
76°
59°
22
81°
58°
23
81°
58°
24
82°
51°
25
75°
50°
26
73°
50°
27
Hist. Avg.
77°
48°
28
Hist. Avg.
76°
48°
29
Hist. Avg.
76°
48°
30
Hist. Avg.
76°
47°
1
Hist. Avg.
75°
47°
2
Hist. Avg.
75°
47°
3
Hist. Avg.
75°
46°
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 73° to 87°, with overnight lows between 50° and 65°. The average high for September is 81° with an average low of 59°. 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.
