S
M
T
W
T
F
S
26
62°
45°
27
63°
40°
28
63°
42°
29
62°
38°
30
62°
37°
1
65°
39°
2
63°
38°
3
64°
39°
4
66°
42°
5
71°
48°
6
73°
49°
7
75°
50°
8
76°
51°
9
76°
51°
10
75°
50°
11
65°
46°
12
65°
44°
13
68°
48°
14
67°
47°
15
66°
46°
16
68°
49°
17
66°
46°
18
71°
45°
19
70°
44°
20
70°
45°
21
69°
44°
22
68°
43°
23
69°
46°
24
70°
49°
25
71°
51°
26
71°
53°
27
79°
47°
28
71°
54°
29
72°
57°
30
81°
48°
31
73°
50°
1
72°
52°
2
76°
49°
3
75°
50°
4
77°
55°
5
82°
50°
6
74°
50°
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 62° to 82°, with overnight lows between 37° and 57°. The average high for May is 70° 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.