S
M
T
W
T
F
S
26
66°
47°
27
65°
50°
28
60°
51°
29
61°
39°
30
59°
34°
1
54°
39°
2
55°
31°
3
61°
38°
4
75°
47°
5
57°
47°
6
58°
38°
7
59°
43°
8
63°
47°
9
72°
49°
10
57°
38°
11
57°
40°
12
58°
46°
13
61°
45°
14
67°
50°
15
70°
48°
16
65°
49°
17
66°
50°
18
69°
49°
19
70°
51°
20
66°
46°
21
67°
47°
22
66°
47°
23
67°
49°
24
68°
50°
25
69°
51°
26
69°
49°
27
71°
49°
28
71°
51°
29
75°
56°
30
78°
56°
31
79°
59°
1
79°
57°
2
74°
55°
3
80°
61°
4
81°
62°
5
81°
61°
6
77°
62°
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 57° to 81°, with overnight lows between 38° and 62°. The average high for May is 69° with an average low of 50°. 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.
