S
M
T
W
T
F
S
26
67°
41°
27
62°
35°
28
54°
35°
29
56°
42°
30
57°
40°
1
57°
37°
2
58°
35°
3
59°
40°
4
64°
45°
5
68°
46°
6
67°
40°
7
62°
38°
8
65°
43°
9
64°
44°
10
69°
47°
11
70°
48°
12
72°
49°
13
72°
46°
14
71°
42°
15
65°
39°
16
66°
40°
17
66°
41°
18
67°
42°
19
69°
39°
20
68°
47°
21
73°
50°
22
70°
50°
23
74°
44°
24
70°
40°
25
66°
42°
26
67°
42°
27
67°
41°
28
68°
45°
29
69°
43°
30
72°
46°
31
73°
49°
1
76°
53°
2
76°
49°
3
69°
45°
4
69°
48°
5
78°
50°
6
76°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in East Olean
East Olean's May 2026 forecast shows daily high temperatures ranging from 54° to 78°, with overnight lows between 35° and 55°. The average high for May is 67° with an average low of 44°. 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 East Olean. See also: June | July | August.