S
M
T
W
T
F
S
26
64°
36°
27
70°
32°
28
66°
34°
29
60°
37°
30
52°
43°
1
59°
39°
2
52°
38°
3
52°
32°
4
69°
37°
5
80°
46°
6
65°
48°
7
58°
35°
8
56°
32°
9
50°
31°
10
70°
47°
11
59°
38°
12
60°
34°
13
56°
36°
14
54°
50°
15
52°
39°
16
71°
56°
17
77°
45°
18
76°
55°
19
84°
61°
20
79°
52°
21
62°
42°
22
61°
45°
23
64°
49°
24
63°
48°
25
65°
50°
26
71°
52°
27
72°
54°
28
69°
48°
29
63°
48°
30
63°
53°
31
66°
52°
1
65°
50°
2
64°
48°
3
64°
47°
4
65°
46°
5
65°
54°
6
66°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Harrisville
Harrisville's May 2026 forecast shows daily high temperatures ranging from 52° to 84°, with overnight lows between 39° and 61°. The average high for May is 67° 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 Harrisville. See also: June | July | August.