S
M
T
W
T
F
S
26
59°
35°
27
71°
35°
28
63°
51°
29
59°
46°
30
51°
37°
1
49°
34°
2
48°
33°
3
52°
44°
4
65°
53°
5
66°
44°
6
55°
42°
7
50°
36°
8
48°
38°
9
55°
44°
10
58°
45°
11
59°
44°
12
60°
47°
13
59°
47°
14
61°
46°
15
63°
43°
16
64°
46°
17
63°
45°
18
64°
53°
19
68°
53°
20
69°
52°
21
72°
54°
22
71°
53°
23
65°
54°
24
72°
49°
25
65°
46°
26
66°
51°
27
66°
55°
28
67°
56°
29
71°
55°
30
68°
53°
31
69°
48°
1
66°
48°
2
66°
49°
3
67°
49°
4
67°
50°
5
68°
50°
6
68°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Penn Yan
Penn Yan's May 2026 forecast shows daily high temperatures ranging from 48° to 72°, with overnight lows between 33° and 56°. The average high for May is 63° with an average low of 48°. 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 Penn Yan. See also: June | July | August.
