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°
43°
12
72°
40°
13
56°
37°
14
62°
37°
15
70°
36°
16
52°
25°
17
40°
19°
18
42°
22°
19
55°
29°
20
56°
32°
21
57°
35°
22
53°
29°
23
47°
30°
24
59°
32°
25
51°
30°
26
50°
29°
27
52°
32°
28
55°
29°
29
52°
32°
30
61°
38°
1
57°
40°
2
55°
34°
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 40° to 72°, with overnight lows between 19° and 43°. The average high for April is 56° with an average low of 32°. 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.
