S
M
T
W
T
F
S
26
62°
36°
27
72°
35°
28
70°
50°
29
64°
52°
30
52°
42°
1
54°
34°
2
46°
36°
3
54°
35°
4
73°
42°
5
76°
49°
6
49°
43°
7
55°
35°
8
53°
36°
9
54°
48°
10
57°
37°
11
53°
31°
12
50°
35°
13
50°
45°
14
51°
41°
15
55°
43°
16
62°
44°
17
63°
46°
18
69°
46°
19
68°
44°
20
66°
47°
21
66°
48°
22
67°
44°
23
71°
49°
24
70°
48°
25
71°
48°
26
72°
50°
27
73°
51°
28
73°
51°
29
72°
52°
30
73°
52°
31
73°
50°
1
68°
46°
2
64°
46°
3
65°
45°
4
69°
51°
5
67°
52°
6
71°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Oneonta
Oneonta's May 2026 forecast shows daily high temperatures ranging from 50° to 73°, with overnight lows between 31° and 52°. The average high for May is 65° with an average low of 46°. 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 Oneonta. See also: June | July | August.