S
M
T
W
T
F
S
26
79°
57°
27
81°
57°
28
72°
57°
29
81°
61°
30
68°
52°
1
70°
48°
2
66°
48°
3
68°
39°
4
79°
41°
5
77°
46°
6
73°
63°
7
64°
52°
8
72°
43°
9
75°
48°
10
82°
52°
11
72°
54°
12
77°
50°
13
79°
50°
14
72°
50°
15
77°
41°
16
81°
54°
17
90°
57°
18
91°
63°
19
88°
64°
20
91°
61°
21
77°
68°
22
82°
66°
23
82°
68°
24
81°
68°
25
84°
70°
26
84°
70°
27
86°
66°
28
88°
68°
29
84°
68°
30
81°
68°
31
82°
64°
1
82°
63°
2
83°
55°
3
83°
55°
4
86°
57°
5
87°
59°
6
91°
66°
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 82° to 91°, with overnight lows between 55° and 66°. The average high for May is 85° with an average low of 59°. 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.