Weather on October 18
San Antonio, TX
55 Years of Data
Avg High
81°F
Avg Low
59°F
Warmest
1993
83°F avg
Coldest
2018
55°F avg
About This Date
October 18th in San Antonio, TX typically brings warm fall weather, with average highs around 81°F and lows near 59°F. Over 55 years of records, the warmest October 18th was in 1993 (83°F average), while the coldest was 2018 (55°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 15% of October 18th dates historically, with the wettest October 18th recording 36.4" 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 October 18th in San Antonio, TX? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 93° | 73° | 83° | — | — |
| 2024 | 82° | 61° | 71° | — | — |
| 2023 | 76° | 41° | 58° | — | — |
| 2022 | 72° | 58° | 65° | — | — |
| 2021 | 71° | 45° | 58° | — | — |
| 2020 | 76° | 59° | 67° | — | — |
| 2019 | 73° | 51° | 62° | — | — |
| 2018coldest | 59° | 50° | 55° | — | — |
| 2017 | 78° | 43° | 60° | — | — |
| 2016 | 90° | 74° | 82° | — | — |
| 2015 | 84° | 59° | 72° | — | — |
| 2014 | 89° | 69° | 79° | — | — |
| 2013 | 72° | 53° | 62° | — | — |
| 2012 | 90° | 67° | 78° | — | — |
| 2011 | 89° | 63° | 76° | — | — |
| 2010 | 84° | 57° | 71° | — | — |
| 2009 | 76° | 51° | 63° | — | — |
| 2008 | 80° | 54° | 67° | — | — |
| 2007 | 91° | 72° | 81° | — | — |
| 2006 | 91° | 60° | 76° | — | — |
| 2005 | 85° | 59° | 72° | — | — |
| 2004 | 90° | 73° | 81° | — | — |
| 2003 | 82° | 51° | 67° | — | — |
| 2002 | 77° | 50° | 64° | — | — |
| 2001 | 70° | 42° | 56° | — | — |
| 2000 | 79° | 58° | 68° | 6.05" | — |
| 1999 | 64° | 48° | 56° | 0.38" | — |
| 1998 | 77° | 69° | 73° | 36.4" | — |
| 1997 | 79° | 47° | 63° | — | — |
| 1996 | 74° | 52° | 63° | — | — |
| 1995 | 84° | 58° | 71° | — | — |
| 1994 | 77° | 67° | 72° | 5.16" | — |
| 1993warmest | 91° | 76° | 83° | — | — |
| 1992 | 77° | 59° | 68° | — | — |
| 1991 | 87° | 59° | 73° | — | — |
| 1990 | 76° | 48° | 62° | — | — |
| 1989 | 66° | 51° | 59° | — | — |
| 1988 | 90° | 67° | 78° | — | — |
| 1987 | 86° | 68° | 77° | — | — |
| 1986 | 80° | 56° | 68° | — | — |
| 1985 | 86° | 75° | 81° | — | — |
| 1984 | 87° | 73° | 80° | 0.03" | — |
| 1983 | 86° | 71° | 79° | — | — |
| 1982 | 84° | 56° | 70° | — | — |
| 1981 | 78° | 53° | 66° | 0.1" | — |
| 1980 | 77° | 63° | 70° | 2.03" | — |
| 1979 | 89° | 73° | 81° | — | — |
| 1978 | 81° | 51° | 66° | — | — |
| 1977 | 84° | 55° | 70° | — | — |
| 1976 | 73° | 45° | 59° | — | — |
| 1975 | 78° | 45° | 61° | — | — |
| 1974 | 82° | 48° | 65° | — | — |
| 1973 | 81° | 50° | 65° | — | — |
| 1972 | 90° | 75° | 82° | — | — |
| 1971 | 86° | 77° | 82° | 1.04" | — |
55 years of data from SAN ANTONIO INCARNATE WORD