Weather on July 21
Lewisville, TX
55 Years of Data
Avg High
96°F
Avg Low
75°F
Warmest
2018
95°F avg
Coldest
2014
70°F avg
About This Date
July 21st in Lewisville, TX typically brings hot summer weather, with average highs around 96°F and lows near 75°F. Over 55 years of records, the warmest July 21st was in 2018 (95°F average), while the coldest was 2014 (70°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 9% of July 21st dates historically, with the wettest July 21st recording 2.36" 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 July 21st in Lewisville, 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 |
|---|---|---|---|---|---|
| 2025 | 95° | 76° | 85° | — | — |
| 2024 | 94° | 73° | 83° | — | — |
| 2023 | 104° | 82° | 93° | — | — |
| 2022 | 108° | 83° | 95° | — | — |
| 2021 | 88° | 70° | 79° | — | — |
| 2020 | 96° | 76° | 86° | — | — |
| 2019 | 97° | 78° | 87° | — | — |
| 2018warmest | 109° | 81° | 95° | — | — |
| 2017 | 99° | 80° | 89° | — | — |
| 2016 | 95° | 79° | 87° | — | — |
| 2015 | 99° | 80° | 89° | — | — |
| 2014coldest | 77° | 63° | 70° | — | — |
| 2013 | 96° | 74° | 85° | 0.18" | — |
| 2012 | 106° | 74° | 90° | — | — |
| 2011 | 100° | 81° | 90° | — | — |
| 2010 | 95° | 78° | 87° | — | — |
| 2009 | 90° | 74° | 82° | 1.6" | — |
| 2008 | 100° | 78° | 89° | — | — |
| 2007 | 92° | 73° | 82° | — | — |
| 2006 | 105° | 79° | 92° | — | — |
| 2005 | 98° | 77° | 88° | — | — |
| 2004 | 97° | 75° | 86° | — | — |
| 2003 | 101° | 80° | 90° | — | — |
| 2002 | 95° | 75° | 85° | — | — |
| 2001 | 101° | 80° | 90° | — | — |
| 2000 | 103° | 75° | 89° | — | — |
| 1999 | 94° | 74° | 84° | — | — |
| 1998 | 100° | 78° | 89° | — | — |
| 1997 | 96° | 76° | 86° | — | — |
| 1996 | 99° | 80° | 89° | — | — |
| 1995 | 97° | 78° | 87° | — | — |
| 1994 | 92° | 76° | 84° | — | — |
| 1993 | 97° | 77° | 87° | — | — |
| 1992 | 89° | 72° | 80° | — | — |
| 1991 | 96° | 77° | 87° | — | — |
| 1990 | 94° | 72° | 83° | — | — |
| 1989 | 87° | 66° | 77° | — | — |
| 1988 | 89° | 66° | 78° | — | — |
| 1987 | 98° | 70° | 84° | — | — |
| 1986 | 99° | 75° | 87° | — | — |
| 1985 | 89° | 68° | 79° | 2.36" | — |
| 1984 | 97° | 72° | 84° | — | — |
| 1983 | 95° | 68° | 82° | — | — |
| 1982 | 98° | 75° | 87° | — | — |
| 1981 | 99° | 78° | 88° | — | — |
| 1980 | 99° | 76° | 87° | 0.13" | — |
| 1979 | 92° | 68° | 80° | — | — |
| 1978 | 100° | 74° | 87° | — | — |
| 1977 | 96° | 74° | 85° | — | — |
| 1976 | 90° | 69° | 79° | — | — |
| 1975 | 96° | 75° | 86° | — | — |
| 1974 | 102° | 73° | 88° | — | — |
| 1973 | 94° | 75° | 84° | — | — |
| 1972 | 94° | 72° | 83° | 0.36" | — |
| 1971 | 93° | 72° | 82° | — | — |
55 years of data from DENTON 2 SE