Weather on October 21
Richardson, TX
55 Years of Data
Avg High
77°F
Avg Low
56°F
Warmest
2004
80°F avg
Coldest
1982
48°F avg
About This Date
October 21st in Richardson, TX typically brings pleasant fall weather, with average highs around 77°F and lows near 56°F. Over 55 years of records, the warmest October 21st was in 2004 (80°F average), while the coldest was 1982 (48°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 22% of October 21st dates historically, with the wettest October 21st recording 5.54" of rain. The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in Richardson, TX? Great weather for outdoor activities.
Warming Trend
1.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 63° | 72° | — | — |
| 2024 | 82° | 57° | 70° | — | — |
| 2023 | 89° | 61° | 75° | — | — |
| 2022 | 88° | 49° | 68° | — | — |
| 2021 | 82° | 64° | 73° | — | — |
| 2020 | 86° | 59° | 73° | — | — |
| 2019 | 72° | 50° | 61° | 2.21" | — |
| 2018 | 68° | 49° | 58° | — | — |
| 2017 | 85° | 70° | 77° | — | — |
| 2016 | 73° | 51° | 62° | — | — |
| 2015 | 83° | 66° | 74° | — | — |
| 2014 | 80° | 56° | 68° | — | — |
| 2013 | 73° | — | — | — | — |
| 2012 | 87° | 73° | 80° | — | — |
| 2011 | 81° | 50° | 65° | — | — |
| 2010 | 85° | 57° | 71° | — | — |
| 2009 | 68° | 61° | 64° | 3.28" | — |
| 2008 | 79° | 57° | 68° | — | — |
| 2007 | 83° | 64° | 73° | — | — |
| 2006 | 78° | 49° | 63° | — | — |
| 2005 | 76° | 57° | 66° | — | — |
| 2004warmest | 86° | 74° | 80° | — | — |
| 2003 | 89° | 63° | 76° | — | — |
| 2002 | 69° | 57° | 63° | — | — |
| 2001 | 80° | 61° | 70° | — | — |
| 2000 | 72° | 63° | 67° | 0.69" | — |
| 1999 | 80° | 47° | 63° | — | — |
| 1998 | 70° | 54° | 62° | 0.03" | — |
| 1997 | 64° | 53° | 59° | 0.53" | — |
| 1996 | 77° | 47° | 62° | 3.89" | — |
| 1995 | 82° | 49° | 65° | — | — |
| 1994 | 79° | 63° | 71° | 5.54" | — |
| 1993 | 67° | 48° | 57° | — | — |
| 1992 | 81° | 64° | 72° | — | — |
| 1991 | 80° | 59° | 70° | — | — |
| 1990 | 65° | 47° | 56° | 0.38" | — |
| 1989 | 73° | 35° | 54° | — | — |
| 1988 | 73° | 55° | 64° | — | — |
| 1987 | 68° | 45° | 56° | — | — |
| 1986 | 70° | 57° | 63° | — | — |
| 1985 | 74° | 63° | 68° | — | — |
| 1984 | 60° | 52° | 56° | 0.08" | — |
| 1983 | 66° | 56° | 61° | — | — |
| 1982coldest | 51° | 45° | 48° | 1.65" | — |
| 1981 | 78° | 59° | 69° | 2.46" | — |
| 1980 | 86° | 52° | 69° | — | — |
| 1979 | 88° | 52° | 70° | — | — |
| 1978 | 87° | 52° | 69° | — | — |
| 1977 | 84° | 61° | 72° | — | — |
| 1976 | 72° | 40° | 56° | — | — |
| 1975 | 84° | 61° | 72° | — | — |
| 1974 | 74° | 53° | 63° | — | — |
| 1973 | 80° | 53° | 67° | — | — |
| 1972 | 72° | 58° | 65° | 3.73" | — |
| 1971 | 75° | 55° | 65° | — | — |
55 years of data from RICHARDSON