S
M
T
W
T
F
S
26
57°
16°
27
46°
28°
28
52°
18°
29
55°
21°
30
52°
19°
1
63°
19°
2
72°
43°
3
75°
25°
4
50°
23°
5
45°
25°
6
54°
16°
7
64°
16°
8
72°
34°
9
63°
32°
10
66°
32°
11
84°
45°
12
73°
37°
13
81°
36°
14
75°
50°
15
72°
41°
16
64°
34°
17
48°
39°
18
46°
39°
19
57°
37°
20
72°
37°
21
70°
43°
22
57°
43°
23
72°
46°
24
84°
43°
25
90°
45°
26
90°
48°
27
90°
57°
28
86°
61°
29
79°
63°
30
73°
63°
31
79°
54°
1
73°
46°
2
75°
54°
3
73°
52°
4
79°
46°
5
82°
54°
6
93°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Glen Ullin
Glen Ullin's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Glen Ullin. See also: June | July | August.
