S
M
T
W
T
F
S
26
66°
36°
27
75°
40°
28
75°
50°
29
73°
50°
30
56°
46°
1
58°
41°
2
52°
42°
3
53°
41°
4
72°
47°
5
78°
54°
6
55°
43°
7
59°
42°
8
57°
37°
9
61°
34°
10
68°
47°
11
59°
37°
12
58°
39°
13
53°
43°
14
54°
49°
15
66°
52°
16
78°
53°
17
80°
56°
18
90°
51°
19
87°
71°
20
76°
44°
21
59°
42°
22
71°
49°
23
67°
49°
24
62°
49°
25
63°
55°
26
72°
59°
27
73°
52°
28
74°
55°
29
75°
56°
30
78°
59°
31
77°
58°
1
76°
59°
2
69°
56°
3
69°
54°
4
68°
58°
5
71°
58°
6
75°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Williston
Williston's May 2026 forecast shows daily high temperatures ranging from 59° to 87°, with overnight lows between 42° and 71°. The average high for May is 72° with an average low of 55°. 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 Williston. See also: June | July | August.
