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°
44°
10
52°
41°
11
49°
38°
12
50°
45°
13
57°
44°
14
53°
48°
15
57°
50°
16
58°
51°
17
61°
55°
18
64°
50°
19
64°
54°
20
65°
55°
21
63°
54°
22
66°
62°
23
73°
54°
24
71°
53°
25
73°
56°
26
75°
57°
27
75°
57°
28
74°
58°
29
75°
58°
30
74°
57°
31
73°
54°
1
66°
52°
2
66°
54°
3
67°
57°
4
75°
58°
5
71°
57°
6
70°
54°
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 75°, with overnight lows between 38° and 62°. The average high for May is 66° with an average low of 53°. 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.
