Weather on April 18
San Antonio, TX
55 Years of Data
Avg High
82°F
Avg Low
60°F
Warmest
2006
84°F avg
Coldest
1999
56°F avg
About This Date
April 18th in San Antonio, TX typically brings warm spring weather, with average highs around 82°F and lows near 60°F. Over 55 years of records, the warmest April 18th was in 2006 (84°F average), while the coldest was 1999 (56°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 25% of April 18th dates historically, with the wettest April 18th recording 4.34" of rain. The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
Planning for April 18th in San Antonio, TX? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 92° | 67° | 79° | — | — |
| 2024 | 81° | 72° | 76° | — | — |
| 2023 | 80° | 66° | 73° | — | — |
| 2022 | 86° | 69° | 78° | — | — |
| 2021 | 68° | 51° | 60° | — | — |
| 2020 | 74° | 55° | 64° | — | — |
| 2019 | 83° | 57° | 70° | 2.82" | — |
| 2018 | 85° | 53° | 69° | — | — |
| 2017 | 80° | 59° | 70° | — | — |
| 2016 | 73° | 66° | 70° | 4.32" | — |
| 2015 | 78° | 67° | 72° | — | — |
| 2014 | 80° | 61° | 70° | — | — |
| 2013 | 80° | 73° | 77° | — | — |
| 2012 | 84° | 57° | 71° | — | — |
| 2011 | 84° | 50° | 67° | — | — |
| 2010 | 74° | 59° | 66° | 2.64" | — |
| 2009 | 71° | 62° | 67° | 3.3" | — |
| 2008 | 85° | 52° | 68° | 2.24" | — |
| 2007 | 73° | 49° | 61° | 0.25" | — |
| 2006warmest | 98° | 69° | 84° | — | — |
| 2005 | 78° | 60° | 69° | — | — |
| 2004 | 81° | 65° | 73° | — | — |
| 2003 | 86° | 67° | 76° | — | — |
| 2002 | 86° | 71° | 79° | — | — |
| 2001 | 63° | 49° | 56° | — | — |
| 2000 | 82° | 66° | 74° | — | — |
| 1999coldest | 73° | 39° | 56° | — | — |
| 1998 | 73° | 53° | 63° | 0.13" | — |
| 1997 | 67° | 56° | 61° | 0.08" | — |
| 1996 | 97° | 68° | 82° | — | — |
| 1995 | 85° | 57° | 71° | 0.43" | — |
| 1994 | 83° | 49° | 66° | — | — |
| 1993 | 87° | 60° | 74° | — | — |
| 1992 | 80° | 58° | 69° | — | — |
| 1991 | 83° | 71° | 77° | — | — |
| 1990 | 79° | 59° | 69° | — | — |
| 1989 | 88° | 70° | 79° | — | — |
| 1988 | 86° | 58° | 72° | — | — |
| 1987 | 92° | 54° | 73° | — | — |
| 1986 | 72° | 69° | 70° | 0.05" | — |
| 1985 | 81° | 64° | 72° | — | — |
| 1984 | 92° | 49° | 70° | — | — |
| 1983 | 86° | 51° | 69° | — | — |
| 1982 | 71° | 61° | 66° | 0.08" | — |
| 1981 | 83° | 69° | 76° | — | — |
| 1980 | 82° | 51° | 67° | — | — |
| 1979 | 84° | 70° | 77° | 0.03" | — |
| 1978 | 87° | 55° | 71° | — | — |
| 1977 | 80° | 53° | 67° | — | — |
| 1976 | 71° | 52° | 61° | 4.34" | — |
| 1975 | 90° | 68° | 79° | — | — |
| 1974 | 84° | 63° | 73° | — | — |
| 1973 | 83° | 50° | 66° | 0.03" | — |
| 1972 | 90° | 71° | 80° | — | — |
| 1971 | 89° | 68° | 79° | — | — |
55 years of data from SAN ANTONIO INCARNATE WORD