Weather on December 20
Mcallen, TX
55 Years of Data
Avg High
72°F
Avg Low
51°F
Warmest
2012
79°F avg
Coldest
1996
38°F avg
About This Date
December 20th in Mcallen, TX typically brings pleasant winter weather, with average highs around 72°F and lows near 51°F. Over 55 years of records, the warmest December 20th was in 2012 (79°F average), while the coldest was 1996 (38°F) — a 41°F range across recorded history. Rain or other precipitation has occurred on about 18% of December 20th dates historically, with the wettest December 20th recording 0.91" of rain. The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
Planning for December 20th in Mcallen, TX? Great weather for outdoor activities.
Warming Trend
1.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 56° | 66° | — | — |
| 2024 | — | 57° | — | — | — |
| 2023 | 77° | 55° | 66° | — | — |
| 2022 | 64° | 52° | 58° | — | — |
| 2021 | 67° | 45° | 56° | 0.3" | — |
| 2020 | 81° | 51° | 66° | — | — |
| 2019 | 66° | 61° | 63° | 0.43" | — |
| 2018 | 78° | 51° | 65° | — | — |
| 2017 | 84° | 64° | 74° | — | — |
| 2016 | 48° | 37° | 43° | — | — |
| 2015 | 81° | 57° | 69° | — | — |
| 2014 | 69° | 59° | 64° | — | — |
| 2013 | 80° | 61° | 70° | — | — |
| 2012warmest | 89° | 68° | 79° | — | — |
| 2011 | 79° | 61° | 70° | — | — |
| 2010 | 75° | 44° | 60° | — | — |
| 2009 | 70° | 46° | 58° | — | — |
| 2008 | 80° | 59° | 70° | — | — |
| 2007 | 85° | 64° | 74° | — | — |
| 2006 | 78° | 65° | 71° | — | — |
| 2005 | 58° | 51° | 54° | — | — |
| 2004 | 73° | 42° | 58° | — | — |
| 2003 | 71° | 43° | 57° | — | — |
| 2002 | 75° | 44° | 60° | — | — |
| 2001 | 72° | 47° | 59° | — | — |
| 2000 | 67° | 37° | 52° | — | — |
| 1999 | 79° | 47° | 63° | — | — |
| 1998 | 83° | 53° | 68° | — | — |
| 1997 | 78° | 53° | 66° | — | — |
| 1996coldest | 49° | 27° | 38° | 0.08" | — |
| 1995 | 66° | 44° | 55° | — | — |
| 1994 | 68° | 56° | 62° | — | — |
| 1993 | 71° | 56° | 63° | — | — |
| 1992 | 84° | 67° | 75° | 0.23" | — |
| 1991 | 71° | 55° | 63° | 0.48" | — |
| 1990 | 81° | 53° | 67° | — | — |
| 1989 | 49° | 43° | 46° | — | — |
| 1988 | 78° | 52° | 65° | — | — |
| 1987 | 79° | 67° | 73° | 0.36" | — |
| 1986 | 75° | 49° | 62° | — | — |
| 1985 | 64° | 42° | 53° | — | — |
| 1984 | 79° | 65° | 72° | — | — |
| 1983 | 45° | 36° | 40° | 0.91" | — |
| 1982 | 73° | 48° | 61° | — | — |
| 1981 | 58° | 47° | 52° | — | — |
| 1980 | 69° | 43° | 56° | — | — |
| 1979 | 70° | 43° | 56° | — | — |
| 1978 | 82° | — | — | — | — |
| 1977 | 80° | 56° | 68° | — | — |
| 1976 | 66° | 64° | 65° | 0.18" | — |
| 1975 | 43° | 36° | 39° | 0.81" | — |
| 1974 | 71° | 54° | 62° | 0.05" | — |
| 1973 | 66° | 37° | 52° | — | — |
| 1972 | 80° | 51° | 66° | — | — |
| 1971 | 73° | 52° | 62° | — | — |
55 years of data from MCALLEN