S
M
T
W
T
F
S
26
78°
57°
27
77°
54°
28
69°
50°
29
71°
55°
30
77°
56°
1
74°
55°
2
70°
53°
3
70°
55°
4
71°
56°
5
73°
55°
6
75°
57°
7
78°
58°
8
73°
58°
9
74°
57°
10
79°
59°
11
80°
60°
12
82°
61°
13
81°
62°
14
82°
62°
15
76°
54°
16
76°
55°
17
77°
54°
18
76°
56°
19
76°
53°
20
75°
54°
21
76°
55°
22
78°
61°
23
79°
63°
24
82°
56°
25
81°
56°
26
77°
58°
27
80°
57°
28
78°
63°
29
84°
63°
30
79°
58°
31
79°
59°
1
80°
62°
2
82°
62°
3
85°
61°
4
84°
59°
5
82°
62°
6
86°
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 69° to 86°, with overnight lows between 50° and 65°. The average high for May is 78° 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.