S
M
T
W
T
F
S
26
80°
47°
27
78°
50°
28
70°
58°
29
74°
47°
30
67°
38°
1
65°
46°
2
62°
39°
3
65°
41°
4
69°
43°
5
70°
48°
6
68°
46°
7
70°
46°
8
73°
47°
9
72°
41°
10
70°
46°
11
70°
45°
12
76°
53°
13
78°
54°
14
77°
52°
15
69°
47°
16
69°
46°
17
70°
46°
18
71°
47°
19
73°
51°
20
75°
52°
21
77°
53°
22
78°
55°
23
78°
55°
24
79°
56°
25
80°
57°
26
79°
56°
27
75°
52°
28
75°
53°
29
76°
53°
30
75°
56°
31
77°
54°
1
79°
58°
2
77°
59°
3
77°
59°
4
78°
58°
5
78°
59°
6
79°
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 62° to 80°, with overnight lows between 38° and 59°. The average high for May is 74° with an average low of 51°. 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.
