S
M
T
W
T
F
S
26
73°
45°
27
64°
49°
28
62°
45°
29
56°
27°
30
54°
22°
1
54°
25°
2
63°
30°
3
73°
35°
4
73°
33°
5
55°
30°
6
47°
25°
7
57°
24°
8
72°
23°
9
64°
32°
10
62°
24°
11
65°
23°
12
77°
44°
13
69°
32°
14
70°
49°
15
84°
44°
16
79°
46°
17
68°
54°
18
70°
43°
19
65°
40°
20
68°
46°
21
69°
46°
22
74°
45°
23
70°
46°
24
71°
47°
25
72°
45°
26
76°
52°
27
76°
53°
28
75°
52°
29
75°
50°
30
67°
46°
31
68°
43°
1
68°
47°
2
67°
51°
3
71°
53°
4
70°
52°
5
75°
52°
6
72°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Black River Falls
Black River Falls's May 2026 forecast shows daily high temperatures ranging from 65° to 84°, with overnight lows between 32° and 54°. The average high for May is 72° with an average low of 47°. 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 Black River Falls. See also: June | July | August.
