S
M
T
W
T
F
S
26
67°
34°
27
73°
35°
28
65°
34°
29
57°
43°
30
46°
43°
1
60°
36°
2
51°
40°
3
52°
35°
4
63°
45°
5
68°
53°
6
59°
48°
7
57°
42°
8
53°
36°
9
55°
39°
10
55°
43°
11
59°
40°
12
60°
42°
13
58°
43°
14
59°
42°
15
63°
42°
16
60°
41°
17
59°
38°
18
60°
46°
19
60°
47°
20
66°
47°
21
67°
46°
22
69°
44°
23
61°
46°
24
60°
46°
25
63°
44°
26
64°
43°
27
63°
43°
28
62°
47°
29
62°
49°
30
68°
50°
31
65°
46°
1
64°
43°
2
63°
44°
3
64°
44°
4
63°
45°
5
64°
45°
6
65°
47°
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 51° to 69°, with overnight lows between 35° and 53°. The average high for May is 61° with an average low of 44°. 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.