S
M
T
W
T
F
S
26
53°
46°
27
52°
43°
28
50°
42°
29
57°
42°
30
58°
44°
1
57°
42°
2
56°
43°
3
55°
42°
4
55°
40°
5
56°
39°
6
59°
47°
7
62°
47°
8
60°
44°
9
61°
48°
10
59°
41°
11
57°
40°
12
58°
41°
13
58°
42°
14
59°
41°
15
61°
45°
16
62°
47°
17
64°
52°
18
69°
44°
19
61°
43°
20
63°
48°
21
66°
53°
22
70°
54°
23
70°
56°
24
73°
54°
25
67°
51°
26
69°
56°
27
74°
55°
28
73°
54°
29
76°
55°
30
75°
55°
31
68°
51°
1
67°
49°
2
69°
54°
3
77°
58°
4
77°
58°
5
78°
59°
6
70°
59°
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 50° to 78°, with overnight lows between 39° and 59°. The average high for May is 64° with an average low of 48°. 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.
