S
M
T
W
T
F
S
26
63°
52°
27
67°
43°
28
73°
39°
29
74°
51°
30
71°
53°
1
61°
50°
2
55°
43°
3
66°
44°
4
77°
56°
5
81°
59°
6
82°
65°
7
76°
49°
8
68°
49°
9
71°
54°
10
73°
53°
11
76°
58°
12
72°
55°
13
75°
58°
14
76°
60°
15
78°
58°
16
74°
58°
17
76°
60°
18
77°
62°
19
80°
63°
20
81°
64°
21
81°
64°
22
75°
57°
23
74°
57°
24
74°
58°
25
75°
60°
26
77°
60°
27
76°
59°
28
76°
59°
29
77°
61°
30
78°
62°
31
77°
64°
1
78°
67°
2
80°
66°
3
78°
66°
4
79°
65°
5
82°
67°
6
82°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Williamston
Williamston's May 2026 forecast shows daily high temperatures ranging from 55° to 82°, with overnight lows between 43° and 68°. The average high for May is 76° with an average low of 59°. 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 Williamston. See also: June | July | August.