Weather on October 21
Mcallen, TX
55 Years of Data
Avg High
86°F
Avg Low
65°F
Warmest
1984
85°F avg
Coldest
1976
57°F avg
About This Date
October 21st in Mcallen, TX typically brings warm fall weather, with average highs around 86°F and lows near 65°F. Over 55 years of records, the warmest October 21st was in 1984 (85°F average), while the coldest was 1976 (57°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 24% of October 21st dates historically, with the wettest October 21st recording 2.67" of rain. The last decade has been 3.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.9°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in Mcallen, TX? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 95° | 76° | 85° | — | — |
| 2024 | 84° | 72° | 78° | 0.13" | — |
| 2023 | 93° | — | — | — | — |
| 2022 | 83° | 54° | 68° | — | — |
| 2021 | 91° | 72° | 81° | — | — |
| 2020 | 92° | 74° | 83° | — | — |
| 2019 | 92° | 73° | 82° | 0.28" | — |
| 2018 | 70° | 66° | 68° | 0.23" | — |
| 2017 | 94° | 74° | 84° | — | — |
| 2016 | 98° | 69° | 84° | 0.15" | — |
| 2015 | 92° | 66° | 79° | — | — |
| 2014 | 89° | 72° | 80° | — | — |
| 2013 | 80° | 63° | 71° | — | — |
| 2012 | 92° | 72° | 82° | — | — |
| 2011 | 88° | 57° | 72° | — | — |
| 2010 | 91° | 68° | 80° | — | — |
| 2009 | 92° | 68° | 80° | — | — |
| 2008 | 87° | 64° | 76° | — | — |
| 2007 | 94° | 70° | 82° | — | — |
| 2006 | 82° | 65° | 73° | — | — |
| 2005 | 94° | 68° | 81° | — | — |
| 2004 | 96° | 56° | 76° | — | — |
| 2003 | 85° | 64° | 74° | — | — |
| 2002 | 87° | 70° | 78° | 0.03" | — |
| 2001 | 89° | 62° | 76° | — | — |
| 2000 | 86° | 69° | 78° | — | — |
| 1999 | 73° | 51° | 62° | — | — |
| 1998 | 79° | 66° | 72° | — | — |
| 1997 | 83° | 66° | 74° | — | — |
| 1996 | 91° | 73° | 82° | — | — |
| 1995 | 81° | 53° | 67° | — | — |
| 1994 | 92° | 72° | 82° | — | — |
| 1993 | 80° | 63° | 71° | — | — |
| 1992 | 86° | 66° | 76° | 0.71" | — |
| 1991 | 86° | 66° | 76° | — | — |
| 1990 | 94° | 57° | 75° | 0.3" | — |
| 1989 | 84° | 49° | 66° | — | — |
| 1988 | 87° | 66° | 77° | — | — |
| 1987 | 80° | 62° | 71° | 0.1" | — |
| 1986 | 86° | 67° | 76° | 0.08" | — |
| 1985 | 81° | 72° | 76° | 1.17" | — |
| 1984warmest | 95° | 75° | 85° | — | — |
| 1983 | 84° | 74° | 79° | — | — |
| 1982 | 83° | 58° | 70° | — | — |
| 1981 | — | 64° | — | — | — |
| 1980 | 64° | 58° | 61° | 1.07" | — |
| 1979 | 94° | 69° | 81° | — | — |
| 1978 | 84° | 54° | 69° | — | — |
| 1977 | 91° | 64° | 78° | — | — |
| 1976coldest | 68° | 47° | 57° | — | — |
| 1975 | 88° | 67° | 77° | — | — |
| 1974 | 82° | 50° | 66° | 2.67" | — |
| 1973 | 85° | 60° | 72° | — | — |
| 1972 | 86° | 64° | 75° | — | — |
| 1971 | 78° | 66° | 72° | 0.43" | — |
55 years of data from MCALLEN