S
M
T
W
T
F
S
26
94°
66°
27
98°
69°
28
88°
61°
29
90°
56°
30
88°
58°
31
74°
63°
1
85°
61°
2
86°
56°
3
86°
52°
4
81°
56°
5
81°
50°
6
85°
43°
7
84°
52°
8
83°
50°
9
82°
54°
10
87°
61°
11
88°
65°
12
89°
64°
13
83°
64°
14
82°
62°
15
87°
67°
16
82°
55°
17
83°
62°
18
79°
51°
19
80°
48°
20
83°
53°
21
80°
52°
22
81°
49°
23
79°
53°
24
81°
51°
25
80°
54°
26
82°
55°
27
84°
55°
28
81°
53°
29
77°
52°
30
81°
57°
31
69°
52°
1
70°
53°
2
69°
51°
3
69°
48°
4
70°
52°
5
73°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Black River Falls
Black River Falls's August 2026 forecast shows daily high temperatures ranging from 69° to 84°, with overnight lows between 48° and 62°. The average high for August is 78° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Black River Falls. See also: September | October | November.
