S
M
T
W
T
F
S
26
47°
25°
27
37°
30°
28
51°
27°
29
56°
30°
30
57°
25°
1
62°
36°
2
73°
42°
3
72°
49°
4
59°
33°
5
49°
32°
6
53°
36°
7
66°
41°
8
74°
43°
9
67°
45°
10
67°
43°
11
67°
45°
12
66°
43°
13
68°
44°
14
62°
39°
15
57°
39°
16
57°
43°
17
63°
46°
18
68°
47°
19
68°
48°
20
60°
44°
21
59°
44°
22
61°
44°
23
60°
45°
24
61°
42°
25
62°
43°
26
63°
44°
27
64°
48°
28
67°
51°
29
73°
50°
30
63°
47°
31
64°
53°
1
70°
53°
2
67°
54°
3
70°
53°
4
70°
54°
5
67°
54°
6
68°
55°
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 49° to 74°, with overnight lows between 32° and 55°. The average high for May is 65° with an average low of 45°. 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.
