Weather on March 21
Lewisville, TX
55 Years of Data
Avg High
69°F
Avg Low
46°F
Warmest
2017
77°F avg
Coldest
2010
35°F avg
About This Date
March 21st in Lewisville, TX typically brings mild spring weather, with average highs around 69°F and lows near 46°F. Over 56 years of records, the warmest March 21st was in 2017 (77°F average), while the coldest was 2010 (35°F) — a 42°F range across recorded history. Rain or other precipitation has occurred on about 18% of March 21st dates historically, with the wettest March 21st recording 1.68" 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 March 21st in Lewisville, TX? Great weather for outdoor activities.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 91° | 58° | 74° | — | — |
| 2025 | 63° | 40° | 51° | — | — |
| 2024 | 72° | 52° | 62° | — | — |
| 2023 | 54° | 31° | 42° | — | — |
| 2022 | 79° | 55° | 67° | — | — |
| 2021 | 68° | 42° | 55° | — | — |
| 2020 | 56° | 40° | 48° | 0.51" | — |
| 2019 | 63° | 47° | 55° | — | — |
| 2018 | 68° | 41° | 55° | — | — |
| 2017warmest | 90° | 64° | 77° | — | — |
| 2016 | 54° | 36° | 45° | — | — |
| 2015 | 55° | 51° | 53° | 1.07" | — |
| 2014 | 71° | 37° | 54° | — | — |
| 2013 | 65° | 46° | 55° | — | — |
| 2012 | 64° | 49° | 56° | 0.74" | — |
| 2011 | 81° | 62° | 71° | — | — |
| 2010coldest | 39° | 30° | 35° | 0.61" | — |
| 2009 | 75° | 53° | 64° | — | — |
| 2008 | 73° | 45° | 59° | — | — |
| 2007 | 72° | 63° | 67° | — | — |
| 2006 | 54° | 37° | 45° | — | — |
| 2005 | 79° | 59° | 69° | 0.03" | — |
| 2004 | 66° | 50° | 58° | — | — |
| 2003 | 61° | 48° | 54° | — | — |
| 2002 | 62° | 37° | 50° | — | — |
| 2001 | 73° | 41° | 57° | — | — |
| 2000 | 64° | 53° | 59° | 1.68" | — |
| 1999 | 71° | 42° | 57° | — | — |
| 1998 | 58° | 34° | 46° | — | — |
| 1997 | 89° | 49° | 69° | — | — |
| 1996 | 68° | 28° | 48° | — | — |
| 1995 | 81° | 51° | 66° | — | — |
| 1994 | 69° | 48° | 59° | — | — |
| 1993 | 64° | 46° | 55° | — | — |
| 1992 | 61° | 49° | 55° | — | — |
| 1991 | 82° | 66° | 74° | — | — |
| 1990 | 74° | 46° | 60° | — | — |
| 1989 | 48° | 32° | 40° | — | — |
| 1988 | 83° | 44° | 63° | — | — |
| 1987 | 79° | 53° | 66° | — | — |
| 1986 | 59° | 30° | 45° | — | — |
| 1985 | 66° | 49° | 57° | 0.46" | — |
| 1984 | 73° | 42° | 58° | — | — |
| 1983 | — | 32° | — | — | — |
| 1982 | 75° | 46° | 61° | 0.18" | — |
| 1981 | 75° | 60° | 68° | — | — |
| 1980 | 70° | 35° | 52° | — | — |
| 1979 | 73° | 59° | 66° | — | — |
| 1978 | 80° | 54° | 67° | — | — |
| 1977 | 67° | 41° | 54° | — | — |
| 1976 | 69° | 41° | 55° | — | — |
| 1975 | 80° | 58° | 69° | — | — |
| 1974 | 48° | 28° | 38° | 0.03" | — |
| 1973 | 60° | 39° | 50° | — | — |
| 1972 | 80° | 53° | 67° | 0.2" | — |
| 1971 | 80° | 48° | 64° | — | — |
56 years of data from DENTON 2 SE