Weather on August 21
Dallas, TX
55 Years of Data
Avg High
96°F
Avg Low
77°F
Warmest
2023
95°F avg
Coldest
2012
74°F avg
About This Date
August 21st in Dallas, TX typically brings hot summer weather, with average highs around 96°F and lows near 77°F. Over 55 years of records, the warmest August 21st was in 2023 (95°F average), while the coldest was 2012 (74°F) — a 21°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 7.11" 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 Dallas, TX? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 98° | 78° | 88° | — | — |
| 2024 | 97° | 78° | 87° | — | — |
| 2023warmest | 105° | 84° | 95° | — | — |
| 2022 | 90° | 74° | 82° | 7.11" | — |
| 2021 | 96° | 79° | 87° | — | — |
| 2020 | 94° | 72° | 83° | — | — |
| 2019 | 100° | 81° | 90° | — | — |
| 2018 | 94° | 75° | 84° | — | — |
| 2017 | 96° | 79° | 87° | — | — |
| 2016 | 91° | 73° | 82° | — | — |
| 2015 | 93° | 71° | 82° | — | — |
| 2014 | 99° | 78° | 88° | — | — |
| 2013 | 96° | 77° | 87° | — | — |
| 2012coldest | 78° | 69° | 74° | 0.51" | — |
| 2011 | 103° | 85° | 94° | — | — |
| 2010 | 103° | 82° | 92° | — | — |
| 2009 | 93° | 69° | 81° | 2.06" | — |
| 2008 | 92° | 71° | 81° | — | — |
| 2007 | 94° | 76° | 85° | — | — |
| 2006 | 103° | 84° | 93° | — | — |
| 2005 | 99° | 80° | 89° | — | — |
| 2004 | 80° | 71° | 76° | — | — |
| 2003 | 100° | 80° | 90° | — | — |
| 2002 | 98° | 78° | 88° | — | — |
| 2001 | 98° | 78° | 88° | — | — |
| 2000 | 101° | 82° | 91° | — | — |
| 1999 | 98° | 74° | 86° | — | — |
| 1998 | 99° | 80° | 89° | — | — |
| 1997 | 101° | 78° | 89° | — | — |
| 1996 | 94° | 82° | 88° | — | — |
| 1995 | 104° | 79° | 91° | — | — |
| 1994 | 89° | 71° | 80° | — | — |
| 1993 | 102° | 82° | 92° | — | — |
| 1992 | 90° | 67° | 78° | — | — |
| 1991 | 86° | 79° | 82° | 0.13" | — |
| 1990 | 104° | 80° | 92° | — | — |
| 1989 | 96° | 78° | 87° | — | — |
| 1988 | 102° | 81° | 91° | — | — |
| 1987 | 99° | 80° | 89° | — | — |
| 1986 | 93° | 79° | 86° | — | — |
| 1985 | 100° | 77° | 89° | — | — |
| 1984 | 99° | 80° | 89° | — | — |
| 1983 | 95° | 75° | 85° | — | — |
| 1982 | 99° | 74° | 86° | — | — |
| 1981 | 88° | 69° | 78° | — | — |
| 1980 | 107° | 79° | 93° | — | — |
| 1979 | 95° | 68° | 82° | 0.33" | — |
| 1978 | 99° | 73° | 86° | 0.86" | — |
| 1977 | 90° | 76° | 83° | — | — |
| 1976 | 93° | 71° | 82° | — | — |
| 1975 | 99° | 76° | 87° | 1.4" | — |
| 1974 | 98° | 76° | 87° | — | — |
| 1973 | 96° | 75° | 86° | — | — |
| 1972 | 100° | 77° | 89° | — | — |
| 1971 | 95° | 76° | 85° | — | — |
55 years of data from DALLAS FAA AP