Weather on August 21
Arlington, TX
55 Years of Data
Avg High
96°F
Avg Low
73°F
Warmest
2023
95°F avg
Coldest
2012
72°F avg
About This Date
August 21st in Arlington, TX typically brings hot summer weather, with average highs around 96°F and lows near 73°F. Over 36 years of records, the warmest August 21st was in 2023 (95°F average), while the coldest was 2012 (72°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 17% of August 21st dates historically, with the wettest August 21st recording 4.09" of rain. The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
Planning for August 21st in Arlington, TX? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 98° | 76° | 87° | 0.15" | — |
| 2024 | 98° | 79° | 88° | — | — |
| 2023warmest | 106° | 85° | 95° | — | — |
| 2022 | 92° | 75° | 83° | 4.09" | — |
| 2021 | 98° | 79° | 88° | — | — |
| 2020 | 97° | 68° | 82° | — | — |
| 2019 | 99° | 79° | 89° | — | — |
| 2018 | 94° | 70° | 82° | — | — |
| 2017 | 95° | 78° | 87° | — | — |
| 2016 | 89° | 71° | 80° | — | — |
| 2015 | 94° | 72° | 83° | — | — |
| 2014 | 98° | 78° | 88° | — | — |
| 2013 | 94° | 71° | 82° | — | — |
| 2012coldest | 79° | 65° | 72° | 0.69" | — |
| 2011 | 103° | 80° | 91° | — | — |
| 2010 | 102° | 79° | 90° | — | — |
| 2009 | 93° | 72° | 82° | 0.2" | — |
| 2008 | 92° | 69° | 80° | — | — |
| 2007 | 94° | 74° | 84° | — | — |
| 2006 | 104° | 80° | 92° | — | — |
| 2005 | 100° | 75° | 88° | — | — |
| 2004 | 77° | 68° | 73° | — | — |
| 2003 | 97° | 75° | 86° | — | — |
| 2002 | 97° | 76° | 86° | — | — |
| 2001 | 97° | 74° | 85° | — | — |
| 2000 | 101° | 74° | 87° | — | — |
| 1999 | 100° | 69° | 85° | — | — |
| 1998 | 99° | 75° | 87° | — | — |
| 1997 | 98° | 74° | 86° | — | — |
| 1996 | 95° | 70° | 82° | — | — |
| 1995 | 100° | 65° | 82° | 3.33" | — |
| 1994 | 100° | 69° | 85° | 3.45" | — |
| 1993 | 103° | 74° | 88° | — | — |
| 1992 | 86° | 61° | 73° | — | — |
| 1991 | 96° | 67° | 81° | — | — |
| 1990 | 101° | 74° | 87° | — | — |
36 years of data from ARLINGTON MUNI AP