Weather on August 21
Henderson, NV
55 Years of Data
Avg High
101°F
Avg Low
77°F
Warmest
2024
103°F avg
Coldest
1975
73°F avg
About This Date
August 21st in Henderson, NV typically brings hot summer weather, with average highs around 101°F and lows near 77°F. Over 55 years of records, the warmest August 21st was in 2024 (103°F average), while the coldest was 1975 (73°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 13% of August 21st dates historically, with the wettest August 21st recording 0.97" of rain. The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
Planning for August 21st in Henderson, NV? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
2.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 112° | 89° | 100° | — | — |
| 2024warmest | 114° | 91° | 103° | — | — |
| 2023 | 78° | 70° | 74° | 0.2" | — |
| 2022 | 105° | 85° | 95° | — | — |
| 2021 | 99° | 82° | 90° | — | — |
| 2020 | 111° | 86° | 99° | — | — |
| 2019 | 108° | 83° | 95° | — | — |
| 2018 | 110° | 89° | 99° | — | — |
| 2017 | 104° | 82° | 93° | — | — |
| 2016 | 106° | 83° | 94° | — | — |
| 2015 | 107° | 86° | 97° | — | — |
| 2014 | 94° | 73° | 83° | — | — |
| 2013 | — | 76° | — | — | — |
| 2012 | 101° | 82° | 91° | 0.97" | — |
| 2011 | 104° | 79° | 91° | — | — |
| 2010 | 111° | 86° | 99° | — | — |
| 2009 | 110° | 82° | 96° | — | — |
| 2008 | 106° | 81° | 93° | — | — |
| 2007 | 110° | 78° | 94° | — | — |
| 2006 | 108° | 74° | 91° | — | — |
| 2005 | 101° | 78° | 89° | — | — |
| 2004 | 104° | 76° | 90° | — | — |
| 2003 | 97° | 78° | 87° | — | — |
| 2002 | 100° | 74° | 87° | — | — |
| 2001 | 108° | 72° | 90° | — | — |
| 2000 | 103° | 77° | 90° | — | — |
| 1999 | 99° | 79° | 89° | — | — |
| 1998 | 103° | 81° | 92° | — | — |
| 1997 | 103° | 82° | 92° | — | — |
| 1996 | 102° | 79° | 90° | — | — |
| 1995 | 96° | 75° | 86° | — | — |
| 1994 | 99° | 81° | 90° | — | — |
| 1993 | 98° | 70° | 84° | — | — |
| 1992 | 106° | 81° | 93° | 0.41" | — |
| 1991 | 104° | 80° | 92° | — | — |
| 1990 | 93° | 67° | 80° | — | — |
| 1989 | 94° | 72° | 83° | — | — |
| 1988 | 92° | 70° | 81° | 0.15" | — |
| 1987 | 100° | 77° | 89° | — | — |
| 1986 | 103° | 80° | 91° | — | — |
| 1985 | 101° | 74° | 87° | — | — |
| 1984 | 89° | 67° | 78° | — | — |
| 1983 | 87° | 65° | 76° | — | — |
| 1982 | 106° | 78° | 92° | — | — |
| 1981 | 101° | 74° | 87° | 0.18" | — |
| 1980 | 95° | 70° | 82° | — | — |
| 1979 | 95° | 67° | 81° | — | — |
| 1978 | 97° | 75° | 86° | — | — |
| 1977 | 102° | 79° | 90° | — | — |
| 1976 | 104° | 73° | 89° | — | — |
| 1975coldest | 86° | 61° | 73° | 0.94" | — |
| 1974 | 95° | 73° | 84° | — | — |
| 1973 | 98° | 72° | 85° | 0.53" | — |
| 1972 | 96° | 71° | 84° | — | — |
| 1971 | 92° | 73° | 82° | — | — |
55 years of data from BOULDER CITY