S
M
T
W
T
F
S
26
59°
39°
27
71°
36°
28
55°
49°
29
54°
42°
30
45°
35°
1
42°
31°
2
42°
30°
3
55°
30°
4
71°
42°
5
68°
50°
6
50°
40°
7
50°
33°
8
52°
32°
9
59°
44°
10
56°
39°
11
50°
32°
12
61°
32°
13
61°
39°
14
44°
39°
15
64°
40°
16
72°
43°
17
82°
54°
18
N/A
19
84°
62°
20
67°
37°
21
61°
38°
22
63°
48°
23
58°
49°
24
67°
48°
25
68°
53°
26
75°
52°
27
74°
51°
28
73°
51°
29
72°
50°
30
76°
52°
31
77°
54°
1
72°
47°
2
70°
52°
3
70°
52°
4
71°
51°
5
68°
50°
6
71°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Portville
Portville's May 2026 forecast shows daily high temperatures ranging from 58° to 84°, with overnight lows between 37° and 62°. The average high for May is 70° 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 Portville. See also: June | July | August.
