S
M
T
W
T
F
S
26
79°
57°
27
73°
52°
28
71°
50°
29
72°
53°
30
70°
52°
1
72°
52°
2
76°
53°
3
73°
52°
4
72°
51°
5
71°
50°
6
72°
50°
7
74°
55°
8
80°
59°
9
78°
58°
10
78°
59°
11
77°
55°
12
75°
52°
13
72°
52°
14
75°
53°
15
75°
60°
16
80°
56°
17
76°
60°
18
83°
61°
19
83°
58°
20
77°
59°
21
79°
62°
22
77°
63°
23
79°
63°
24
85°
64°
25
86°
64°
26
86°
65°
27
85°
66°
28
87°
66°
29
88°
64°
30
88°
65°
31
86°
63°
1
87°
59°
2
82°
63°
3
83°
65°
4
83°
66°
5
82°
66°
6
88°
65°
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 70° to 88°, with overnight lows between 50° and 66°. The average high for May is 79° 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.