S
M
T
W
T
F
S
26
76°
50°
27
77°
55°
28
69°
45°
29
66°
37°
30
66°
41°
1
66°
44°
2
74°
38°
3
85°
46°
4
89°
60°
5
66°
47°
6
56°
43°
7
78°
37°
8
82°
58°
9
90°
48°
10
66°
50°
11
78°
46°
12
93°
58°
13
85°
62°
14
96°
64°
15
100°
71°
16
93°
73°
17
94°
69°
18
96°
54°
19
69°
48°
20
65°
48°
21
69°
55°
22
78°
57°
23
78°
60°
24
87°
61°
25
91°
62°
26
86°
63°
27
75°
61°
28
77°
61°
29
84°
64°
30
81°
60°
31
77°
56°
1
81°
57°
2
80°
55°
3
81°
57°
4
84°
60°
5
86°
63°
6
87°
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 75° to 91°, with overnight lows between 55° and 65°. The average high for May is 82° 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.
