S
M
T
W
T
F
S
26
38°
28°
27
39°
29°
28
48°
33°
29
50°
31°
30
51°
36°
1
62°
39°
2
63°
38°
3
58°
39°
4
61°
40°
5
60°
38°
6
59°
40°
7
62°
41°
8
50°
31°
9
53°
36°
10
55°
35°
11
52°
34°
12
53°
34°
13
54°
35°
14
55°
36°
15
59°
40°
16
64°
45°
17
63°
46°
18
57°
45°
19
58°
38°
20
62°
43°
21
67°
47°
22
62°
48°
23
59°
47°
24
57°
40°
25
56°
40°
26
58°
39°
27
60°
46°
28
59°
40°
29
62°
45°
30
71°
51°
31
72°
51°
1
72°
50°
2
72°
49°
3
63°
48°
4
64°
50°
5
71°
49°
6
73°
50°
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 38° to 73°, with overnight lows between 28° and 51°. The average high for May is 59° with an average low of 41°. 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.
