S
M
T
W
T
F
S
26
54°
36°
27
50°
41°
28
46°
33°
29
52°
31°
30
47°
31°
1
46°
41°
2
56°
38°
3
54°
41°
4
56°
40°
5
52°
37°
6
52°
38°
7
48°
37°
8
52°
35°
9
50°
35°
10
53°
37°
11
54°
32°
12
57°
40°
13
58°
40°
14
60°
36°
15
55°
42°
16
57°
35°
17
54°
44°
18
55°
40°
19
54°
45°
20
52°
42°
21
55°
41°
22
53°
42°
23
51°
35°
24
54°
31°
25
64°
39°
26
58°
44°
27
57°
43°
28
57°
41°
29
58°
45°
30
56°
44°
31
61°
40°
1
67°
43°
2
69°
48°
3
76°
49°
4
74°
50°
5
69°
52°
6
68°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Butte
Butte's May 2026 forecast shows daily high temperatures ranging from 56° to 76°, with overnight lows between 40° and 52°. The average high for May is 66° with an average low of 46°. 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 Butte. See also: June | July | August.
