S
M
T
W
T
F
S
26
34°
26°
27
42°
26°
28
48°
24°
29
50°
27°
30
56°
23°
1
65°
30°
2
66°
35°
3
64°
33°
4
59°
30°
5
53°
29°
6
64°
39°
7
69°
37°
8
68°
41°
9
65°
39°
10
61°
35°
11
62°
34°
12
66°
37°
13
67°
38°
14
59°
32°
15
52°
26°
16
53°
27°
17
54°
29°
18
54°
33°
19
55°
33°
20
52°
31°
21
54°
33°
22
55°
30°
23
53°
31°
24
54°
29°
25
55°
29°
26
59°
30°
27
63°
34°
28
64°
38°
29
63°
38°
30
58°
39°
31
66°
38°
1
60°
37°
2
58°
33°
3
63°
40°
4
59°
37°
5
59°
40°
6
60°
43°
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 52° to 69°, with overnight lows between 26° and 43°. The average high for May 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 May weather will actually feel in Butte. See also: June | July | August.
