S
M
T
W
T
F
S
26
84°
61°
27
81°
64°
28
67°
60°
29
82°
63°
30
72°
60°
1
65°
54°
2
71°
49°
3
72°
46°
4
79°
48°
5
80°
51°
6
81°
63°
7
78°
61°
8
68°
57°
9
72°
63°
10
82°
62°
11
78°
54°
12
78°
59°
13
82°
58°
14
79°
47°
15
81°
54°
16
84°
59°
17
87°
58°
18
87°
60°
19
87°
62°
20
85°
61°
21
86°
62°
22
84°
57°
23
84°
61°
24
85°
60°
25
85°
62°
26
86°
62°
27
86°
61°
28
85°
62°
29
86°
63°
30
81°
63°
31
81°
62°
1
86°
63°
2
87°
63°
3
87°
64°
4
86°
64°
5
82°
63°
6
86°
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 72° to 87°, with overnight lows between 47° and 64°. The average high for May is 84° with an average low of 60°. 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.
