S
M
T
W
T
F
S
26
68°
51°
27
77°
48°
28
75°
57°
29
66°
51°
30
61°
42°
1
57°
40°
2
54°
35°
3
63°
32°
4
77°
50°
5
69°
57°
6
61°
44°
7
62°
39°
8
71°
39°
9
75°
54°
10
75°
54°
11
71°
47°
12
76°
39°
13
73°
50°
14
64°
41°
15
72°
40°
16
76°
56°
17
84°
61°
18
85°
65°
19
87°
64°
20
72°
57°
21
67°
52°
22
64°
57°
23
72°
63°
24
N/A
25
78°
62°
26
77°
66°
27
77°
63°
28
84°
59°
29
79°
56°
30
70°
52°
31
75°
52°
1
76°
51°
2
75°
52°
3
78°
57°
4
79°
58°
5
80°
57°
6
81°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Smithfield
Smithfield's May 2026 forecast shows daily high temperatures ranging from 70° to 84°, with overnight lows between 51° and 66°. The average high for May is 78° with an average low of 57°. 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.