S
M
T
W
T
F
S
26
49°
39°
27
56°
43°
28
44°
33°
29
64°
31°
30
62°
34°
1
64°
31°
2
74°
27°
3
77°
39°
4
79°
41°
5
52°
42°
6
58°
39°
7
75°
39°
8
78°
45°
9
74°
39°
10
74°
38°
11
86°
54°
12
80°
48°
13
83°
40°
14
88°
57°
15
94°
44°
16
88°
50°
17
77°
52°
18
52°
43°
19
63°
37°
20
59°
44°
21
68°
44°
22
68°
51°
23
78°
46°
24
87°
60°
25
91°
58°
26
84°
60°
27
78°
61°
28
71°
61°
29
75°
60°
30
78°
56°
31
79°
56°
1
78°
57°
2
78°
55°
3
77°
56°
4
78°
57°
5
82°
59°
6
79°
55°
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 71° to 91°, with overnight lows between 55° and 61°. The average high for May is 80° with an average low of 58°. 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.