S
M
T
W
T
F
S
26
61°
40°
27
74°
41°
28
64°
53°
29
53°
43°
30
49°
38°
1
46°
35°
2
45°
32°
3
53°
32°
4
70°
45°
5
66°
48°
6
52°
43°
7
55°
39°
8
55°
40°
9
64°
43°
10
54°
42°
11
54°
39°
12
59°
34°
13
62°
45°
14
47°
43°
15
61°
50°
16
66°
54°
17
68°
61°
18
76°
68°
19
76°
59°
20
61°
46°
21
54°
47°
22
60°
50°
23
63°
54°
24
70°
56°
25
65°
57°
26
66°
57°
27
65°
58°
28
66°
57°
29
68°
57°
30
73°
55°
31
66°
51°
1
66°
49°
2
65°
49°
3
66°
50°
4
67°
53°
5
71°
59°
6
77°
60°
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 54° to 77°, with overnight lows between 46° and 68°. The average high for May is 67° with an average low of 55°. 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.
