Weather on October 21
Arlington, TX
55 Years of Data
Avg High
80°F
Avg Low
55°F
Warmest
2012
81°F avg
Coldest
1995
55°F avg
About This Date
October 21st in Arlington, TX typically brings warm fall weather, with average highs around 80°F and lows near 55°F — a 25°F daily swing. Over 36 years of records, the warmest October 21st was in 2012 (81°F average), while the coldest was 1995 (55°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 19% of October 21st dates historically, with the wettest October 21st recording 4.14" of rain. The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in Arlington, TX? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
2.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 53° | 68° | — | — |
| 2024 | 85° | 49° | 67° | — | — |
| 2023 | 93° | 52° | 72° | — | — |
| 2022 | 91° | 45° | 68° | — | — |
| 2021 | 87° | 61° | 74° | — | — |
| 2020 | 88° | 71° | 79° | — | — |
| 2019 | 74° | 47° | 60° | 1.65" | — |
| 2018 | 70° | 46° | 58° | — | — |
| 2017 | 89° | 67° | 78° | — | — |
| 2016 | 73° | 48° | 61° | — | — |
| 2015 | 85° | 70° | 77° | — | — |
| 2014 | 82° | 54° | 68° | — | — |
| 2013 | 71° | 49° | 60° | — | — |
| 2012warmest | 88° | 74° | 81° | — | — |
| 2011 | 82° | 51° | 67° | — | — |
| 2010 | 86° | 61° | 73° | — | — |
| 2009 | 70° | 61° | 65° | 4.14" | — |
| 2008 | 82° | 56° | 69° | — | — |
| 2007 | 88° | 63° | 75° | — | — |
| 2006 | 80° | 47° | 63° | — | — |
| 2005 | 78° | 54° | 66° | — | — |
| 2004 | 89° | 70° | 79° | — | — |
| 2003 | 87° | 53° | 70° | — | — |
| 2002 | 67° | 57° | 62° | 0.03" | — |
| 2001 | 80° | 59° | 70° | — | — |
| 2000 | 72° | 63° | 67° | 0.08" | — |
| 1999 | 79° | 40° | 59° | — | — |
| 1998 | 70° | 54° | 62° | 0.13" | — |
| 1997 | 61° | 50° | 55° | — | — |
| 1996 | 86° | 68° | 77° | — | — |
| 1995coldest | 71° | 40° | 55° | — | — |
| 1994 | 75° | 65° | 70° | 1.83" | — |
| 1993 | 65° | 49° | 57° | — | — |
| 1992 | 84° | 54° | 69° | — | — |
| 1991 | 73° | 49° | 61° | — | — |
| 1990 | 81° | 44° | 62° | 0.15" | — |
36 years of data from ARLINGTON MUNI AP