Weather on August 21
Austin, TX
55 Years of Data
Avg High
97°F
Avg Low
74°F
Warmest
2024
94°F avg
Coldest
2016
76°F avg
About This Date
August 21st in Austin, TX typically brings hot summer weather, with average highs around 97°F and lows near 74°F. Over 55 years of records, the warmest August 21st was in 2024 (94°F average), while the coldest was 2016 (76°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 11% of August 21st dates historically, with the wettest August 21st recording 5.41" 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 Austin, TX? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 96° | 72° | 84° | 1.52" | — |
| 2024warmest | 109° | 79° | 94° | — | — |
| 2023 | 105° | 80° | 93° | — | — |
| 2022 | 95° | 78° | 87° | — | — |
| 2021 | 98° | 78° | 88° | — | — |
| 2020 | 104° | 77° | 91° | — | — |
| 2019 | 101° | 78° | 89° | — | — |
| 2018 | 100° | 74° | 87° | — | — |
| 2017 | 96° | 73° | 85° | — | — |
| 2016coldest | 84° | 68° | 76° | 5.41" | — |
| 2015 | 92° | 72° | 82° | — | — |
| 2014 | 101° | 76° | 88° | — | — |
| 2013 | 96° | 67° | 81° | — | — |
| 2012 | 94° | 68° | 81° | — | — |
| 2011 | 103° | 72° | 87° | — | — |
| 2010 | 101° | 74° | 87° | — | — |
| 2009 | 103° | 77° | 90° | — | — |
| 2008 | 94° | 72° | 83° | — | — |
| 2007 | 92° | 70° | 81° | — | — |
| 2006 | 102° | 72° | 87° | — | — |
| 2005 | 100° | 72° | 86° | — | — |
| 2004 | 99° | 70° | 84° | 1.19" | — |
| 2003 | 96° | 76° | 86° | — | — |
| 2002 | 96° | 77° | 87° | — | — |
| 2001 | 101° | 74° | 87° | — | — |
| 2000 | 101° | 75° | 88° | — | — |
| 1999 | 104° | 75° | 90° | — | — |
| 1998 | 98° | 74° | 86° | 0.08" | — |
| 1997 | 97° | 75° | 86° | — | — |
| 1996 | 96° | 74° | 85° | — | — |
| 1995 | 97° | 77° | 87° | 1.02" | — |
| 1994 | 82° | 72° | 77° | 0.18" | — |
| 1993 | 98° | 74° | 86° | — | — |
| 1992 | 93° | 67° | 80° | — | — |
| 1991 | 98° | 75° | 87° | — | — |
| 1990 | 102° | 75° | 89° | — | — |
| 1989 | 99° | 74° | 86° | — | — |
| 1988 | 99° | 76° | 87° | — | — |
| 1987 | 97° | 73° | 85° | — | — |
| 1986 | 91° | 77° | 84° | — | — |
| 1985 | 100° | 76° | 88° | — | — |
| 1984 | 100° | 76° | 88° | — | — |
| 1983 | 95° | 76° | 85° | — | — |
| 1982 | 98° | 76° | 87° | — | — |
| 1981 | 94° | 72° | 83° | — | — |
| 1980 | 101° | 73° | 87° | — | — |
| 1979 | 95° | 72° | 83° | — | — |
| 1978 | 97° | 74° | 85° | — | — |
| 1977 | 99° | 78° | 88° | — | — |
| 1976 | 92° | 68° | 80° | — | — |
| 1975 | 96° | 74° | 85° | — | — |
| 1974 | 94° | 72° | 83° | — | — |
| 1973 | 99° | 74° | 86° | — | — |
| 1972 | 97° | 74° | 85° | — | — |
| 1971 | 93° | 73° | 83° | — | — |
55 years of data from AUSTIN 6S