S
M
T
W
T
F
S
26
34°
19°
27
43°
25°
28
53°
27°
29
56°
23°
30
53°
24°
1
64°
33°
2
61°
36°
3
55°
34°
4
59°
37°
5
58°
33°
6
49°
26°
7
50°
27°
8
50°
26°
9
52°
30°
10
51°
32°
11
52°
29°
12
53°
30°
13
54°
31°
14
56°
32°
15
59°
35°
16
62°
40°
17
59°
42°
18
56°
42°
19
57°
36°
20
64°
41°
21
63°
43°
22
58°
41°
23
57°
42°
24
56°
39°
25
57°
38°
26
57°
37°
27
58°
44°
28
59°
39°
29
64°
40°
30
69°
45°
31
67°
45°
1
65°
43°
2
62°
37°
3
60°
37°
4
63°
41°
5
68°
37°
6
72°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Wilsall
Wilsall's May 2026 forecast shows daily high temperatures ranging from 34° to 72°, with overnight lows between 19° and 45°. The average high for May is 58° with an average low of 35°. 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 Wilsall. See also: June | July | August.