S
M
T
W
T
F
S
30
93°
55°
31
87°
47°
1
79°
57°
2
96°
54°
3
93°
59°
4
97°
55°
5
92°
58°
6
94°
62°
7
94°
65°
8
84°
51°
9
82°
50°
10
92°
52°
11
83°
50°
12
72°
50°
13
73°
45°
14
75°
56°
15
73°
41°
16
84°
50°
17
70°
52°
18
77°
60°
19
67°
59°
20
62°
54°
21
62°
53°
22
64°
54°
23
75°
57°
24
79°
52°
25
76°
48°
26
77°
53°
27
63°
54°
28
72°
58°
29
76°
51°
30
81°
47°
1
62°
43°
2
76°
44°
3
75°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mount Rushmore Ut
Mount Rushmore Ut's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Mount Rushmore Ut. See also: October | November | December.
