S
M
T
W
T
F
S
26
84°
68°
27
92°
74°
28
85°
68°
29
68°
60°
30
63°
57°
1
66°
53°
2
76°
52°
3
81°
54°
4
83°
63°
5
89°
59°
6
68°
52°
7
75°
51°
8
76°
60°
9
88°
67°
10
79°
62°
11
78°
56°
12
83°
58°
13
90°
62°
14
89°
68°
15
89°
71°
16
88°
74°
17
87°
77°
18
88°
76°
19
82°
66°
20
73°
65°
21
75°
65°
22
75°
66°
23
81°
68°
24
83°
67°
25
84°
67°
26
82°
70°
27
83°
68°
28
85°
67°
29
86°
68°
30
83°
71°
31
85°
72°
1
85°
72°
2
84°
71°
3
83°
68°
4
82°
65°
5
83°
67°
6
84°
73°
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 73° to 88°, with overnight lows between 65° and 77°. The average high for May is 83° with an average low of 69°. 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.