Mount Rushmore National Memorial Rainfall Forecast

Today 27 Oct
5%
Wed 28 Oct
5%
Thu 29 Oct
No Rain
Fri 30 Oct
No Rain
Sat 31 Oct
20%
Sun 1 Nov
75%
Mon 2 Nov
65%

Mount Rushmore National Memorial Rainfall Statistics

October Rainfall

Custer, Custer County Airport (12.4 miles)

Total Rainfall 2026
17.1 in
Daily Average 2026
0.1 in
Wettest Day 20 September, 2026
2.1 in
Wet Days 2026
84/300 (28%)
Total Rainfall September
3.1 in
Daily Average September
0.1 in
Wettest Day 20 September, 2026
2.1 in
Wet Days September
10/30 (33%)
Total Rainfall October
0.1 in
Daily Average October
0.01 in
Wettest Day 13 October, 2026
0.1 in
Wet Days October
5/27 (19%)

Climate (2021–2025)

Custer, Custer County Airport (12.4 miles)

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Annual Average 2021–2025
18.1 in
Monthly Average 2021–2026
1.5 in
Daily Average 2021–2026
0.05 in
Wettest Day 20 September, 2026
2.1 in

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