S
M
T
W
T
F
S
26
50°
27°
27
34°
30°
28
50°
32°
29
54°
34°
30
54°
27°
1
57°
34°
2
73°
37°
3
68°
45°
4
55°
39°
5
45°
28°
6
54°
27°
7
61°
30°
8
68°
45°
9
59°
39°
10
70°
41°
11
84°
48°
12
70°
45°
13
88°
41°
14
75°
48°
15
73°
43°
16
73°
39°
17
55°
41°
18
43°
36°
19
57°
36°
20
66°
46°
21
57°
37°
22
61°
41°
23
70°
41°
24
83°
49°
25
87°
56°
26
89°
58°
27
84°
58°
28
82°
55°
29
81°
59°
30
80°
55°
31
83°
56°
1
75°
55°
2
80°
55°
3
77°
58°
4
78°
58°
5
81°
59°
6
76°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Belle Fourche
Belle Fourche's May 2026 forecast shows daily high temperatures ranging from 75° to 89°, with overnight lows between 49° and 59°. The average high for May is 81° with an average low of 56°. 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 Belle Fourche. See also: June | July | August.
