Weather on March 18
Mcallen, TX
55 Years of Data
Avg High
82°F
Avg Low
60°F
Warmest
2008
82°F avg
Coldest
2000
58°F avg
About This Date
March 18th in Mcallen, TX typically brings warm spring weather, with average highs around 82°F and lows near 60°F. Over 56 years of records, the warmest March 18th was in 2008 (82°F average), while the coldest was 2000 (58°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 7% of March 18th dates historically, with the wettest March 18th recording 0.66" of rain. The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
Planning for March 18th in Mcallen, TX? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 73° | 52° | 62° | — | — |
| 2025 | 86° | 56° | 71° | — | — |
| 2024 | 82° | 66° | 74° | — | — |
| 2023 | 74° | 54° | 64° | 0.03" | — |
| 2022 | 96° | 63° | 79° | — | — |
| 2021 | 93° | 61° | 77° | — | — |
| 2020 | 89° | 73° | 81° | — | — |
| 2019 | 68° | 54° | 61° | 0.66" | — |
| 2018 | 93° | 71° | 82° | — | — |
| 2017 | 83° | 67° | 75° | — | — |
| 2016 | 83° | 72° | 77° | — | — |
| 2015 | 75° | 64° | 70° | 0.41" | — |
| 2014 | 76° | 49° | 62° | — | — |
| 2013 | 93° | 66° | 80° | — | — |
| 2012 | 85° | 71° | 78° | — | — |
| 2011 | 87° | 69° | 78° | — | — |
| 2010 | 77° | 48° | 63° | — | — |
| 2009 | 85° | 60° | 72° | — | — |
| 2008warmest | 91° | 73° | 82° | — | — |
| 2007 | 79° | 64° | 71° | — | — |
| 2006 | 88° | 70° | 79° | — | — |
| 2005 | 74° | 49° | 61° | — | — |
| 2004 | 83° | 70° | 76° | — | — |
| 2003 | 88° | 62° | 75° | — | — |
| 2002 | 89° | 72° | 80° | — | — |
| 2001 | 73° | 62° | 68° | — | — |
| 2000coldest | 63° | 54° | 58° | — | — |
| 1999 | 82° | 68° | 75° | — | — |
| 1998 | 85° | 57° | 71° | — | — |
| 1997 | 71° | 59° | 65° | — | — |
| 1996 | 90° | 58° | 74° | — | — |
| 1995 | 83° | 55° | 69° | — | — |
| 1994 | 86° | 61° | 73° | — | — |
| 1993 | 78° | 59° | 69° | — | — |
| 1992 | 85° | 67° | 76° | — | — |
| 1991 | 79° | 55° | 67° | — | — |
| 1990 | 80° | 52° | 66° | — | — |
| 1989 | 87° | 66° | 77° | — | — |
| 1988 | 77° | 46° | 62° | — | — |
| 1987 | 81° | 54° | 67° | — | — |
| 1986 | 86° | 65° | 75° | — | — |
| 1985 | 67° | 51° | 59° | — | — |
| 1984 | 89° | 70° | 79° | — | — |
| 1983 | 75° | 51° | 63° | — | — |
| 1982 | 90° | 73° | 81° | — | — |
| 1981 | 80° | 56° | 68° | — | — |
| 1980 | 79° | 52° | 65° | — | — |
| 1979 | 78° | 69° | 74° | — | — |
| 1978 | 75° | 49° | 62° | — | — |
| 1977 | 87° | 64° | 76° | — | — |
| 1976 | 79° | 43° | 61° | — | — |
| 1975 | 87° | 66° | 77° | — | — |
| 1974 | 82° | 64° | 73° | 0.13" | — |
| 1973 | 79° | 47° | 63° | — | — |
| 1972 | 86° | 55° | 71° | — | — |
| 1971 | 86° | 51° | 69° | — | — |
56 years of data from MCALLEN