Weather on October 21
Mc Kinney, TX
55 Years of Data
Avg High
78°F
Avg Low
53°F
Warmest
1979
81°F avg
Coldest
1976
51°F avg
About This Date
October 21st in Mc Kinney, TX typically brings pleasant fall weather, with average highs around 78°F and lows near 53°F — a 25°F daily swing. Over 55 years of records, the warmest October 21st was in 1979 (81°F average), while the coldest was 1976 (51°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 16% of October 21st dates historically, with the wettest October 21st recording 11.43" 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 October 21st in Mc Kinney, TX? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 51° | 67° | — | — |
| 2024 | 82° | 47° | 64° | — | — |
| 2023 | 91° | 50° | 71° | — | — |
| 2022 | 89° | 44° | 67° | — | — |
| 2021 | 84° | 56° | 70° | — | — |
| 2020 | 84° | 66° | 75° | — | — |
| 2019 | 72° | 47° | 59° | 0.33" | — |
| 2018 | 69° | 47° | 58° | — | — |
| 2017 | 87° | 61° | 74° | 0.58" | — |
| 2016 | 72° | 48° | 60° | — | — |
| 2015 | 83° | 67° | 75° | — | — |
| 2014 | 81° | 55° | 68° | — | — |
| 2013 | 72° | 49° | 60° | — | — |
| 2012 | 87° | 73° | 80° | — | — |
| 2011 | 81° | 46° | 63° | — | — |
| 2010 | 84° | 51° | 68° | — | — |
| 2009 | 68° | 60° | 64° | 3.91" | — |
| 2008 | 80° | 51° | 66° | — | — |
| 2007 | 86° | 64° | 75° | — | — |
| 2006 | 72° | 38° | 55° | — | — |
| 2005 | 74° | 52° | 63° | — | — |
| 2004 | 82° | 68° | 75° | 0.03" | — |
| 2003 | 90° | 52° | 71° | — | — |
| 2002 | 67° | 52° | 59° | 11.43" | — |
| 2001 | 77° | 58° | 67° | — | — |
| 2000 | 68° | 56° | 62° | — | — |
| 1999 | 80° | 40° | 60° | — | — |
| 1998 | 72° | 56° | 64° | — | — |
| 1997 | 78° | 53° | 66° | — | — |
| 1996 | 81° | 62° | 71° | — | — |
| 1995 | 80° | 39° | 60° | — | — |
| 1994 | 78° | 63° | 70° | 8.15" | — |
| 1993 | 65° | 49° | 57° | — | — |
| 1992 | 80° | 60° | 70° | — | — |
| 1991 | 78° | 48° | 63° | — | — |
| 1990 | 80° | 47° | 63° | — | — |
| 1989 | 80° | 43° | 61° | — | — |
| 1988 | 73° | 58° | 65° | — | — |
| 1987 | 65° | 40° | 52° | — | — |
| 1986 | 74° | 50° | 62° | — | — |
| 1985 | 74° | 60° | 67° | — | — |
| 1984 | 65° | 52° | 58° | 4.78" | — |
| 1983 | 73° | 57° | 65° | 0.66" | — |
| 1982 | 63° | 44° | 53° | — | — |
| 1981 | 76° | 57° | 66° | — | — |
| 1980 | 82° | 47° | 64° | — | — |
| 1979warmest | 90° | 72° | 81° | — | — |
| 1978 | 89° | 49° | 69° | — | — |
| 1977 | 87° | 57° | 72° | — | — |
| 1976coldest | 70° | 33° | 51° | — | — |
| 1975 | 84° | 57° | 71° | — | — |
| 1974 | 74° | 50° | 62° | — | — |
| 1973 | 80° | 46° | 63° | — | — |
| 1972 | 70° | 54° | 62° | 0.71" | — |
| 1971 | 77° | 54° | 65° | — | — |
55 years of data from MCKINNEY MUNI AP