S
M
T
W
T
F
S
26
84°
54°
27
83°
56°
28
77°
55°
29
78°
57°
30
80°
59°
31
82°
59°
1
86°
58°
2
80°
59°
3
80°
59°
4
81°
58°
5
85°
59°
6
84°
58°
7
75°
58°
8
77°
54°
9
75°
51°
10
76°
57°
11
79°
53°
12
78°
56°
13
75°
49°
14
75°
50°
15
76°
57°
16
76°
54°
17
80°
56°
18
81°
56°
19
81°
55°
20
75°
56°
21
74°
55°
22
78°
54°
23
82°
55°
24
84°
54°
25
84°
44°
26
83°
43°
27
73°
41°
28
73°
42°
29
74°
44°
30
74°
45°
31
80°
41°
1
73°
40°
2
69°
38°
3
69°
39°
4
71°
40°
5
72°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mount Rushmore Ut
Mount Rushmore Ut's August 2026 forecast shows daily high temperatures ranging from 69° to 86°, with overnight lows between 38° and 59°. The average high for August is 78° with an average low of 52°. 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 Mount Rushmore Ut. See also: September | October | November.
