S
M
T
W
T
F
S
26
88°
55°
27
85°
50°
28
78°
54°
29
82°
53°
30
81°
50°
31
78°
57°
1
85°
56°
2
82°
59°
3
87°
60°
4
87°
58°
5
83°
58°
6
85°
57°
7
87°
58°
8
87°
52°
9
78°
52°
10
78°
53°
11
77°
57°
12
82°
57°
13
85°
56°
14
85°
57°
15
84°
55°
16
86°
56°
17
84°
55°
18
75°
56°
19
83°
55°
20
84°
54°
21
78°
56°
22
Hist. Avg.
84°
55°
23
Hist. Avg.
84°
54°
24
Hist. Avg.
84°
54°
25
Hist. Avg.
84°
54°
26
Hist. Avg.
84°
54°
27
Hist. Avg.
83°
53°
28
Hist. Avg.
83°
53°
29
Hist. Avg.
83°
53°
30
Hist. Avg.
82°
52°
31
Hist. Avg.
82°
52°
1
Hist. Avg.
82°
52°
2
Hist. Avg.
82°
51°
3
Hist. Avg.
81°
51°
4
Hist. Avg.
81°
51°
5
Hist. Avg.
81°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Mount Rushmore Ut
Mount Rushmore Ut's August 2026 forecast shows daily high temperatures ranging from 75° to 88°, with overnight lows between 50° and 60°. The average high for August is 83° with an average low of 55°. 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.
