Weather on August 21 at Joshua Tree
Joshua Tree National Park
Based on 55 years of data from Palm Springs, CA
Elevation Note: Joshua Tree sits at 4,500 ft. Expect temperatures 16°F cooler than the data shown below, which comes from Palm Springs, CA at a lower elevation.
Planning Your Visit
August 21st in Joshua Tree National Park (via Palm Springs, CA) typically brings hot summer weather, with average highs around 106°F and lows near 76°F — a 30°F daily swing. Over 55 years of records, the warmest August 21st was in 2026 (101°F average), while the coldest was 1975 (80°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 4% of August 21st dates historically. The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
Planning for August 21st in Joshua Tree? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2026 | 114°F | 87°F | 0" | -- |
| 2025 | 116°F | 84°F | 0" | -- |
| 2024 | 108°F | 86°F | 0" | -- |
| 2023 | 91°F | 69°F | 0.04" | -- |
| 2022 | 109°F | 86°F | 0" | -- |
| 2021 | 99°F | 73°F | 0" | -- |
| 2020 | 103°F | 88°F | 0" | 0" |
| 2019 | 116°F | 76°F | 0" | 0" |
| 2018 | 108°F | 83°F | 0" | 0" |
| 2017 | 107°F | 74°F | 0" | 0" |
| 2016 | 98°F | 84°F | 0" | 0" |
| 2015 | 106°F | 78°F | 0" | 0" |
| 2014 | 101°F | 76°F | 0" | 0" |
| 2013 | 110°F | 82°F | 0" | -- |
| 2012 | 105°F | 83°F | 0" | -- |
| 2011 | 107°F | 71°F | 0" | -- |
| 2010 | 108°F | 81°F | 0" | 0" |
| 2009 | 110°F | 78°F | 0" | 0" |
| 2008 | 105°F | 72°F | 0" | 0" |
| 2007 | 112°F | 80°F | 0" | 0" |
| 2006 | 108°F | 78°F | 0" | 0" |
| 2005 | 113°F | 80°F | 0" | 0" |
| 2004 | 105°F | 77°F | 0" | 0" |
| 2003 | 97°F | 74°F | 0.26" | 0" |
| 2002 | 103°F | 73°F | 0" | 0" |
| 2001 | 110°F | 79°F | 0" | 0" |
| 2000 | 109°F | 71°F | 0" | 0" |
| 1999 | 110°F | 82°F | 0" | 0" |
| 1998 | 113°F | 76°F | 0" | 0" |
| 1997 | 109°F | 79°F | 0" | 0" |
| 1996 | 110°F | 72°F | 0" | 0" |
| 1995 | 102°F | 82°F | 0" | 0" |
| 1994 | 110°F | 78°F | 0" | 0" |
| 1993 | 107°F | 65°F | 0" | 0" |
| 1991 | 108°F | 78°F | 0" | 0" |
| 1990 | 101°F | 65°F | 0" | 0" |
| 1989 | 103°F | 65°F | 0" | 0" |
| 1988 | 102°F | 76°F | 0" | 0" |
| 1987 | 109°F | 72°F | 0" | 0" |
| 1986 | 110°F | 82°F | 0" | 0" |
| 1985 | 105°F | 68°F | 0" | 0" |
| 1984 | 98°F | 75°F | 0" | 0" |
| 1983 | 93°F | 69°F | 0" | 0" |
| 1982 | 108°F | 87°F | 0" | 0" |
| 1981 | 115°F | 80°F | 0" | 0" |
| 1980 | 107°F | 67°F | 0" | 0" |
| 1979 | 100°F | 63°F | 0" | 0" |
| 1978 | 108°F | 64°F | 0" | 0" |
| 1977 | 110°F | 77°F | 0" | 0" |
| 1976 | 102°F | 64°F | 0" | 0" |
| 1975 | 99°F | 61°F | 0" | 0" |
| 1974 | 105°F | 71°F | 0" | 0" |
| 1973 | 109°F | 77°F | 0" | 0" |
| 1972 | 112°F | 71°F | 0" | 0" |
| 1971 | 99°F | 76°F | 0" | 0" |