S
M
T
W
T
F
S
26
50°
19°
27
45°
28°
28
48°
21°
29
46°
27°
30
52°
28°
1
64°
25°
2
68°
37°
3
75°
32°
4
46°
34°
5
43°
27°
6
54°
26°
7
65°
36°
8
69°
41°
9
60°
32°
10
63°
35°
11
75°
43°
12
77°
43°
13
65°
38°
14
64°
37°
15
69°
38°
16
67°
39°
17
67°
38°
18
70°
42°
19
64°
47°
20
64°
40°
21
62°
37°
22
65°
42°
23
66°
43°
24
65°
44°
25
65°
42°
26
66°
39°
27
66°
40°
28
67°
44°
29
69°
50°
30
67°
46°
31
73°
50°
1
77°
52°
2
79°
53°
3
80°
53°
4
81°
54°
5
79°
53°
6
75°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Southwest Mountrail Ut
Southwest Mountrail Ut's May 2026 forecast shows daily high temperatures ranging from 43° to 81°, with overnight lows between 26° and 54°. The average high for May is 68° with an average low of 42°. 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 Southwest Mountrail Ut. See also: June | July | August.
