S
M
T
W
T
F
S
26
47°
25°
27
37°
30°
28
51°
27°
29
56°
30°
30
57°
25°
1
60°
31°
2
72°
34°
3
73°
40°
4
55°
32°
5
45°
23°
6
55°
30°
7
65°
42°
8
69°
50°
9
61°
40°
10
71°
46°
11
78°
49°
12
70°
46°
13
72°
45°
14
71°
44°
15
74°
49°
16
66°
43°
17
71°
48°
18
72°
49°
19
78°
54°
20
61°
48°
21
62°
49°
22
62°
47°
23
63°
49°
24
69°
50°
25
72°
52°
26
70°
52°
27
74°
51°
28
75°
53°
29
74°
53°
30
75°
52°
31
75°
52°
1
74°
54°
2
77°
55°
3
77°
51°
4
64°
47°
5
66°
50°
6
67°
53°
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 55° to 78°, with overnight lows between 30° and 55°. The average high for May is 70° with an average low of 49°. 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.
