S
M
T
W
T
F
S
26
67°
34°
27
73°
35°
28
65°
34°
29
57°
43°
30
46°
43°
1
58°
35°
2
44°
33°
3
53°
39°
4
64°
33°
5
74°
52°
6
63°
45°
7
62°
36°
8
56°
36°
9
58°
43°
10
61°
45°
11
61°
43°
12
60°
39°
13
54°
42°
14
59°
44°
15
58°
45°
16
59°
44°
17
63°
45°
18
65°
43°
19
69°
47°
20
67°
46°
21
66°
48°
22
67°
48°
23
62°
46°
24
61°
44°
25
62°
46°
26
62°
47°
27
63°
46°
28
63°
45°
29
64°
44°
30
64°
47°
31
66°
51°
1
66°
47°
2
65°
45°
3
67°
52°
4
71°
52°
5
66°
51°
6
69°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Smithfield
Smithfield's May 2026 forecast shows daily high temperatures ranging from 54° to 74°, with overnight lows between 36° and 53°. The average high for May is 63° with an average low of 46°. 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 Smithfield. See also: June | July | August.