S
M
T
W
T
F
S
26
77°
54°
27
82°
50°
28
81°
59°
29
68°
52°
30
64°
43°
1
64°
41°
2
61°
39°
3
66°
36°
4
81°
50°
5
73°
59°
6
64°
48°
7
66°
45°
8
73°
43°
9
77°
55°
10
82°
55°
11
75°
52°
12
81°
46°
13
79°
54°
14
68°
43°
15
75°
46°
16
88°
64°
17
90°
64°
18
91°
72°
19
90°
70°
20
82°
66°
21
66°
57°
22
75°
57°
23
81°
66°
24
77°
66°
25
81°
64°
26
82°
66°
27
86°
70°
28
88°
66°
29
82°
66°
30
82°
55°
31
83°
59°
1
81°
57°
2
81°
54°
3
82°
58°
4
86°
64°
5
86°
66°
6
84°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Buffalo
Buffalo's May 2026 forecast shows daily high temperatures ranging from 81° to 86°, with overnight lows between 54° and 66°. The average high for May is 83° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Buffalo. See also: June | July | August.
