S
M
T
W
T
F
S
29
64°
30°
30
55°
30°
31
36°
23°
1
30°
27°
2
34°
30°
3
30°
27°
4
41°
23°
5
45°
21°
6
34°
21°
7
55°
21°
8
43°
28°
9
46°
27°
10
61°
21°
11
68°
39°
12
73°
43°
13
43°
39°
14
64°
39°
15
71°
41°
16
63°
27°
17
37°
19°
18
49°
22°
19
62°
34°
20
72°
37°
21
73°
39°
22
71°
43°
23
59°
35°
24
51°
32°
25
52°
28°
26
57°
29°
27
61°
32°
28
60°
33°
29
64°
40°
30
63°
37°
1
53°
37°
2
55°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Glen Ullin
Glen Ullin's April 2026 forecast shows daily high temperatures ranging from 37° to 73°, with overnight lows between 19° and 43°. The average high for April is 60° with an average low of 34°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Glen Ullin. See also: May | June | July.
