S
M
T
W
T
F
S
26
55°
41°
27
55°
43°
28
54°
39°
29
54°
34°
30
50°
32°
1
52°
33°
2
66°
43°
3
65°
51°
4
63°
32°
5
51°
31°
6
48°
33°
7
54°
36°
8
65°
43°
9
63°
41°
10
64°
44°
11
65°
46°
12
64°
44°
13
66°
47°
14
67°
46°
15
60°
45°
16
61°
46°
17
62°
50°
18
66°
52°
19
72°
52°
20
72°
53°
21
66°
46°
22
60°
44°
23
61°
43°
24
62°
44°
25
64°
47°
26
63°
48°
27
64°
48°
28
63°
46°
29
66°
52°
30
70°
47°
31
66°
50°
1
66°
53°
2
67°
51°
3
66°
53°
4
67°
53°
5
68°
49°
6
68°
50°
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 48° to 72°, with overnight lows between 31° and 53°. The average high for May is 64° with an average low of 46°. 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.
