S
M
T
W
T
F
S
29
55°
25°
30
65°
34°
31
68°
54°
1
43°
32°
2
54°
32°
3
74°
50°
4
78°
44°
5
48°
31°
6
41°
28°
7
33°
21°
8
52°
37°
9
64°
41°
10
62°
47°
11
68°
46°
12
61°
43°
13
58°
44°
14
62°
41°
15
58°
39°
16
60°
33°
17
48°
26°
18
50°
28°
19
54°
34°
20
63°
41°
21
65°
43°
22
65°
43°
23
64°
42°
24
66°
43°
25
67°
43°
26
67°
41°
27
62°
35°
28
54°
35°
29
56°
42°
30
57°
40°
1
57°
37°
2
58°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Olean
Olean's April 2026 forecast shows daily high temperatures ranging from 33° to 78°, with overnight lows between 21° and 50°. The average high for April is 59° with an average low of 38°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Olean. See also: May | June | July.
