Weather on August 21 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 21st 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 21st was in 2008 (85°F average), while the coldest was 2018 (58°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 22% of August 21st dates historically, with the wettest August 21st recording 0.56" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 21st in Badlands? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 87°F | 66°F | 0.03" | 0" |
| 2024 | 90°F | 62°F | 0" | 0" |
| 2023 | 89°F | 63°F | 0" | 0" |
| 2022 | 94°F | 59°F | 0" | 0" |
| 2021 | 79°F | 50°F | 0" | 0" |
| 2020 | 92°F | 69°F | 0" | 0" |
| 2019 | 75°F | 58°F | 0" | 0" |
| 2018 | 65°F | 51°F | 0.18" | 0" |
| 2017 | 77°F | 58°F | 0" | 0" |
| 2016 | 85°F | 56°F | 0" | 0" |
| 2015 | 86°F | 60°F | 0" | 0" |
| 2014 | 80°F | 63°F | 0.56" | 0" |
| 2013 | 83°F | 65°F | 0" | 0" |
| 2012 | 90°F | 58°F | 0" | 0" |
| 2011 | 85°F | 61°F | 0" | 0" |
| 2010 | 98°F | 64°F | 0" | 0" |
| 2009 | 75°F | 52°F | 0" | 0" |
| 2008 | 98°F | 71°F | 0" | 0" |
| 2007 | 78°F | 60°F | 0" | 0" |
| 2006 | 85°F | 61°F | 0" | 0" |
| 2005 | 85°F | 58°F | 0" | 0" |
| 2004 | 90°F | 54°F | 0" | 0" |
| 2003 | 81°F | 60°F | 0" | 0" |
| 2002 | 77°F | 61°F | 0.38" | 0" |
| 2001 | 92°F | 69°F | 0" | 0" |
| 2000 | 79°F | 58°F | 0.13" | 0" |
| 1999 | 85°F | 62°F | 0.28" | 0" |
| 1998 | 85°F | 60°F | 0.46" | 0" |
| 1997 | 78°F | 61°F | 0" | 0" |
| 1996 | 78°F | 62°F | 0" | 0" |
| 1995 | 87°F | 49°F | 0" | 0" |
| 1994 | 84°F | 51°F | 0" | 0" |
| 1993 | 74°F | 59°F | 0" | 0" |
| 1992 | 91°F | 55°F | 0" | 0" |
| 1991 | 90°F | 60°F | 0" | 0" |
| 1990 | 82°F | 59°F | 0" | 0" |
| 1989 | 79°F | 55°F | 0" | 0" |
| 1988 | 92°F | 70°F | 0" | 0" |
| 1987 | 83°F | 69°F | 0" | 0" |
| 1986 | 73°F | 53°F | 0" | 0" |
| 1985 | 90°F | 58°F | 0" | 0" |
| 1984 | 82°F | 55°F | 0.2" | 0" |
| 1983 | 91°F | 61°F | 0.08" | 0" |
| 1982 | 90°F | 62°F | 0" | 0" |
| 1981 | 92°F | 59°F | 0.15" | 0" |
| 1980 | 80°F | 55°F | 0.03" | 0" |
| 1979 | 74°F | 49°F | 0" | 0" |
| 1978 | 90°F | 57°F | 0" | 0" |
| 1977 | 80°F | 49°F | 0" | 0" |
| 1976 | 97°F | 56°F | 0" | 0" |
| 1975 | 84°F | 60°F | 0" | 0" |
| 1974 | 77°F | 46°F | 0" | 0" |
| 1973 | 97°F | 63°F | 0" | 0" |
| 1972 | 84°F | 57°F | 0.08" | 0" |
| 1971 | 93°F | 64°F | 0" | 0" |