Weather on June 21
San Antonio, TX
55 Years of Data
Avg High
92°F
Avg Low
73°F
Warmest
2023
92°F avg
Coldest
2007
72°F avg
About This Date
June 21st in San Antonio, TX typically brings hot summer weather, with average highs around 92°F and lows near 73°F. Over 55 years of records, the warmest June 21st was in 2023 (92°F average), while the coldest was 2007 (72°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 31% of June 21st dates historically, with the wettest June 21st recording 6.76" of rain. The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
Planning for June 21st in San Antonio, TX? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 91° | 75° | 83° | 0.28" | — |
| 2024 | 87° | 76° | 81° | 0.38" | — |
| 2023warmest | 105° | 78° | 92° | — | — |
| 2022 | 100° | 77° | 89° | — | — |
| 2021 | 91° | 78° | 85° | — | — |
| 2020 | 93° | 76° | 84° | — | — |
| 2019 | 95° | 78° | 87° | — | — |
| 2018 | 84° | 73° | 79° | 0.03" | — |
| 2017 | 95° | 69° | 82° | — | — |
| 2016 | 93° | 75° | 84° | — | — |
| 2015 | 84° | 73° | 79° | 2.77" | — |
| 2014 | 93° | 77° | 85° | — | — |
| 2013 | 93° | 76° | 84° | — | — |
| 2012 | 89° | 74° | 81° | 0.36" | — |
| 2011 | 99° | 78° | 88° | — | — |
| 2010 | 93° | 75° | 84° | — | — |
| 2009 | 98° | 77° | 88° | — | — |
| 2008 | 93° | 71° | 82° | 0.03" | — |
| 2007coldest | 75° | 68° | 72° | 4.85" | — |
| 2006 | 89° | 75° | 82° | — | — |
| 2005 | 92° | 68° | 80° | — | — |
| 2004 | 91° | 72° | 81° | — | — |
| 2003 | 92° | 73° | 82° | — | — |
| 2002 | 95° | 74° | 84° | — | — |
| 2001 | 92° | 70° | 81° | — | — |
| 2000 | 90° | 74° | 82° | — | — |
| 1999 | 77° | 70° | 73° | 2.92" | — |
| 1998 | 101° | 77° | 89° | — | — |
| 1997 | 80° | 66° | 73° | 6.76" | — |
| 1996 | 100° | 73° | 87° | — | — |
| 1995 | 91° | 64° | 78° | — | — |
| 1994 | 93° | 70° | 81° | 0.76" | — |
| 1993 | 89° | 72° | 80° | 1.3" | — |
| 1992 | 95° | 74° | 84° | — | — |
| 1991 | 99° | 76° | 87° | — | — |
| 1990 | 98° | 76° | 87° | — | — |
| 1989 | 96° | 74° | 85° | — | — |
| 1988 | 94° | 73° | 83° | — | — |
| 1987 | 92° | 77° | 84° | — | — |
| 1986 | 91° | 75° | 83° | — | — |
| 1985 | 87° | 71° | 79° | 0.18" | — |
| 1984 | 96° | 75° | 86° | — | — |
| 1983 | 92° | 70° | 81° | — | — |
| 1982 | 93° | 69° | 81° | — | — |
| 1981 | 93° | 76° | 84° | — | — |
| 1980 | 95° | 70° | 82° | 1.32" | — |
| 1979 | 92° | 79° | 85° | — | — |
| 1978 | 92° | 73° | 82° | — | — |
| 1977 | 90° | 76° | 83° | 0.89" | — |
| 1976 | 91° | 60° | 76° | — | — |
| 1975 | 85° | 75° | 80° | 0.03" | — |
| 1974 | 90° | 72° | 81° | — | — |
| 1973 | 82° | 68° | 75° | 0.08" | — |
| 1972 | 94° | 76° | 85° | — | — |
| 1971 | 89° | 71° | 80° | 2.72" | — |
55 years of data from SAN ANTONIO INCARNATE WORD