Weather on August 20 at Badlands
Badlands National Park
Based on 55 years of data from Rapid City, SD
Elevation Note: Badlands sits at 3,200 ft. Expect temperatures 11°F cooler than the data shown below, which comes from Rapid City, SD at a lower elevation.
Planning Your Visit
August 20th in Badlands National Park (via Rapid City, SD) typically brings warm summer weather, with average highs around 85°F and lows near 59°F — a 26°F daily swing. Over 55 years of records, the warmest August 20th was in 1976 (86°F average), while the coldest was 2018 (58°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 25% of August 20th dates historically, with the wettest August 20th recording 1.63" of rain. The last decade has been 2.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.3°F cooler on this date compared to 20-30 years ago.
Planning for August 20th in Badlands? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 100°F | 64°F | 0" | 0" |
| 2024 | 90°F | 64°F | 0" | 0" |
| 2023 | 70°F | 60°F | 0" | 0" |
| 2022 | 84°F | 58°F | 0" | 0" |
| 2021 | 71°F | 55°F | 0.74" | 0" |
| 2020 | 96°F | 73°F | 0" | 0" |
| 2019 | 80°F | 66°F | 0" | 0" |
| 2018 | 66°F | 50°F | 0.1" | 0" |
| 2017 | 80°F | 61°F | 0" | 0" |
| 2016 | 70°F | 50°F | 0" | 0" |
| 2015 | 82°F | 54°F | 0" | 0" |
| 2014 | 87°F | 65°F | 0.03" | 0" |
| 2013 | 95°F | 70°F | 0" | 0" |
| 2012 | 84°F | 56°F | 0" | 0" |
| 2011 | 80°F | 54°F | 0" | 0" |
| 2010 | 91°F | 64°F | 0" | 0" |
| 2009 | 70°F | 56°F | 0" | 0" |
| 2008 | 93°F | 60°F | 0" | 0" |
| 2007 | 77°F | 60°F | 0" | 0" |
| 2006 | 85°F | 61°F | 0.08" | 0" |
| 2005 | 84°F | 59°F | 0" | 0" |
| 2004 | 76°F | 54°F | 0" | 0" |
| 2003 | 91°F | 70°F | 0" | 0" |
| 2002 | 83°F | 62°F | 0" | 0" |
| 2001 | 90°F | 64°F | 0" | 0" |
| 2000 | 88°F | 63°F | 0" | 0" |
| 1999 | 88°F | 56°F | 0" | 0" |
| 1998 | 84°F | 63°F | 0.71" | 0" |
| 1997 | 77°F | 58°F | 0" | 0" |
| 1996 | 92°F | 57°F | 0" | 0" |
| 1995 | 78°F | 49°F | 0" | 0" |
| 1994 | 78°F | 50°F | 0" | 0" |
| 1993 | 82°F | 54°F | 1.63" | 0" |
| 1992 | 89°F | 58°F | 0" | 0" |
| 1991 | 93°F | 56°F | 0" | 0" |
| 1990 | 78°F | 60°F | 0" | 0" |
| 1989 | 77°F | 55°F | 0.94" | 0" |
| 1988 | 93°F | 62°F | 0" | 0" |
| 1987 | 87°F | 58°F | 0" | 0" |
| 1986 | 101°F | 60°F | 0" | 0" |
| 1985 | 82°F | 56°F | 0.03" | 0" |
| 1984 | 78°F | 65°F | 0.36" | 0" |
| 1983 | 93°F | 57°F | 0.15" | 0" |
| 1982 | 81°F | 62°F | 0" | 0" |
| 1981 | 98°F | 56°F | 0" | 0" |
| 1980 | 81°F | 53°F | 0.81" | 0" |
| 1979 | 72°F | 57°F | 0" | 0" |
| 1978 | 91°F | 43°F | 0" | 0" |
| 1977 | 85°F | 55°F | 0.13" | 0" |
| 1976 | 100°F | 71°F | 0" | 0" |
| 1975 | 81°F | 58°F | 0" | 0" |
| 1974 | 90°F | 62°F | 0" | 0" |
| 1973 | 100°F | 59°F | 0" | 0" |
| 1972 | 87°F | 60°F | 0.25" | 0" |
| 1971 | 91°F | 60°F | 0.13" | 0" |