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
74°
53°
8
72°
59°
9
72°
63°
10
80°
61°
11
79°
52°
12
76°
50°
13
78°
53°
14
82°
52°
15
81°
58°
16
84°
60°
17
84°
59°
18
83°
62°
19
85°
62°
20
84°
57°
21
79°
59°
22
80°
60°
23
77°
61°
24
78°
60°
25
79°
61°
26
80°
61°
27
78°
60°
28
79°
62°
29
79°
61°
30
76°
60°
31
78°
63°
1
80°
62°
2
81°
63°
3
82°
63°
4
83°
64°
5
83°
64°
6
80°
65°
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 85°, with overnight lows between 50° and 65°. The average high for May is 80° 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.
