S
M
T
W
T
F
S
26
62°
41°
27
69°
38°
28
66°
38°
29
58°
49°
30
57°
43°
1
56°
36°
2
54°
39°
3
55°
40°
4
59°
45°
5
64°
47°
6
61°
44°
7
63°
44°
8
62°
45°
9
61°
44°
10
62°
44°
11
62°
42°
12
63°
46°
13
63°
47°
14
64°
44°
15
62°
43°
16
62°
44°
17
61°
43°
18
62°
44°
19
67°
50°
20
66°
47°
21
64°
45°
22
65°
46°
23
64°
45°
24
65°
47°
25
66°
53°
26
70°
50°
27
66°
48°
28
66°
47°
29
69°
54°
30
75°
55°
31
75°
53°
1
72°
54°
2
75°
57°
3
77°
57°
4
76°
56°
5
77°
51°
6
70°
51°
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 77°, with overnight lows between 36° and 57°. The average high for May is 65° with an average low of 47°. 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.