Weather on June 21
Allen, TX
55 Years of Data
Avg High
92°F
Avg Low
71°F
Warmest
1998
88°F avg
Coldest
1976
70°F avg
About This Date
June 21st in Allen, TX typically brings hot summer weather, with average highs around 92°F and lows near 71°F. Over 55 years of records, the warmest June 21st was in 1998 (88°F average), while the coldest was 1976 (70°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 20% of June 21st dates historically, with the wettest June 21st recording 3.45" of rain. The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
Planning for June 21st in Allen, TX? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 93° | 78° | 86° | — | — |
| 2024 | 93° | 75° | 84° | — | — |
| 2023 | 92° | 76° | 84° | — | — |
| 2022 | 97° | 75° | 86° | — | — |
| 2021 | 90° | 67° | 78° | 0.18" | — |
| 2020 | 86° | 69° | 78° | 0.05" | — |
| 2019 | 94° | 81° | 87° | — | — |
| 2018 | 96° | 74° | 85° | — | — |
| 2017 | 90° | 67° | 78° | — | — |
| 2016 | 95° | 75° | 85° | — | — |
| 2015 | 79° | 72° | 75° | 2.57" | — |
| 2014 | 91° | 73° | 82° | — | — |
| 2013 | 94° | 74° | 84° | — | — |
| 2012 | 93° | 71° | 82° | — | — |
| 2011 | 92° | 64° | 78° | 3.45" | — |
| 2010 | 99° | 76° | 87° | — | — |
| 2009 | 94° | 74° | 84° | — | — |
| 2008 | 91° | 69° | 80° | — | — |
| 2007 | 85° | 70° | 77° | 0.97" | — |
| 2006 | 94° | 70° | 82° | — | — |
| 2005 | 91° | 61° | 76° | — | — |
| 2004 | 90° | 72° | 81° | 0.03" | — |
| 2003 | 92° | 72° | 82° | — | — |
| 2002 | 93° | 69° | 81° | — | — |
| 2001 | 93° | 69° | 81° | 0.46" | — |
| 2000 | 92° | 69° | 80° | 1.47" | — |
| 1999 | 83° | 71° | 77° | 0.25" | — |
| 1998warmest | 99° | 78° | 88° | — | — |
| 1997 | 90° | 72° | 81° | — | — |
| 1996 | 94° | 71° | 82° | — | — |
| 1995 | 91° | 66° | 79° | — | — |
| 1994 | 92° | 67° | 79° | — | — |
| 1993 | 83° | 76° | 79° | — | — |
| 1992 | 86° | 69° | 78° | — | — |
| 1991 | 94° | 71° | 82° | — | — |
| 1990 | 99° | 76° | 87° | — | — |
| 1989 | 95° | 69° | 82° | — | — |
| 1988 | 93° | 69° | 81° | — | — |
| 1987 | 90° | 74° | 82° | — | — |
| 1986 | 93° | 72° | 82° | — | — |
| 1985 | 91° | 69° | 80° | — | — |
| 1984 | 98° | 74° | 86° | — | — |
| 1983 | 92° | 68° | 80° | — | — |
| 1982 | 87° | 66° | 77° | 1.47" | — |
| 1981 | 92° | 75° | 83° | — | — |
| 1980 | 92° | 69° | 80° | 2.36" | — |
| 1979 | 95° | 76° | 85° | — | — |
| 1978 | 92° | 71° | 81° | — | — |
| 1977 | 94° | 74° | 84° | — | — |
| 1976coldest | 85° | 55° | 70° | — | — |
| 1975 | 91° | 70° | 80° | — | — |
| 1974 | 94° | 73° | 83° | — | — |
| 1973 | 87° | 64° | 76° | — | — |
| 1972 | 97° | 65° | 81° | — | — |
| 1971 | 93° | 71° | 82° | — | — |
55 years of data from MCKINNEY MUNI AP