S
M
T
W
T
F
S
26
84°
57°
27
84°
55°
28
79°
61°
29
75°
59°
30
64°
50°
1
68°
45°
2
66°
45°
3
70°
39°
4
81°
52°
5
73°
59°
6
72°
54°
7
70°
46°
8
75°
41°
9
81°
54°
10
84°
55°
11
75°
50°
12
79°
45°
13
81°
55°
14
73°
46°
15
79°
45°
16
84°
63°
17
90°
59°
18
90°
72°
19
89°
64°
20
76°
66°
21
77°
67°
22
79°
68°
23
79°
64°
24
81°
64°
25
80°
63°
26
78°
66°
27
79°
62°
28
81°
63°
29
80°
60°
30
79°
60°
31
83°
59°
1
85°
63°
2
86°
62°
3
82°
62°
4
78°
59°
5
79°
59°
6
85°
64°
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 76° to 90°, with overnight lows between 59° and 72°. The average high for May is 81° with an average low of 63°. 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.
