Weather on November 18
San Antonio, TX
55 Years of Data
Avg High
73°F
Avg Low
51°F
Warmest
2025
79°F avg
Coldest
2000
43°F avg
About This Date
November 18th in San Antonio, TX typically brings pleasant fall weather, with average highs around 73°F and lows near 51°F. Over 55 years of records, the warmest November 18th was in 2025 (79°F average), while the coldest was 2000 (43°F) — a 36°F range across recorded history. Rain or other precipitation has occurred on about 35% of November 18th dates historically, with the wettest November 18th recording 5.59" of rain. The last decade has been 6.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.6°F warmer on this date compared to 20-30 years ago.
Planning for November 18th in San Antonio, TX? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 85° | 73° | 79° | — | — |
| 2024 | 81° | 53° | 67° | 0.36" | — |
| 2023 | 78° | 61° | 69° | — | — |
| 2022 | 58° | 43° | 50° | — | — |
| 2021 | 82° | 54° | 68° | — | — |
| 2020 | 78° | 42° | 60° | — | — |
| 2019 | 69° | 38° | 53° | 0.38" | — |
| 2018 | 71° | 39° | 55° | 0.05" | — |
| 2017 | 85° | 69° | 77° | — | — |
| 2016 | 81° | 54° | 67° | — | — |
| 2015 | 75° | 43° | 59° | — | — |
| 2014 | 56° | 34° | 45° | — | — |
| 2013 | 86° | 61° | 73° | — | — |
| 2012 | 68° | 43° | 55° | — | — |
| 2011 | 64° | 42° | 53° | — | — |
| 2010 | 79° | 42° | 60° | — | — |
| 2009 | 67° | 36° | 51° | — | — |
| 2008 | 72° | 35° | 53° | — | — |
| 2007 | 69° | 59° | 64° | 0.05" | — |
| 2006 | 74° | 35° | 54° | — | — |
| 2005 | 61° | 34° | 47° | — | — |
| 2004 | 73° | 56° | 64° | 0.69" | — |
| 2003 | 81° | 56° | 68° | 0.94" | — |
| 2002 | 69° | 36° | 52° | — | — |
| 2001 | 71° | 62° | 67° | — | — |
| 2000coldest | 49° | 37° | 43° | 1.42" | — |
| 1999 | 77° | 53° | 65° | — | — |
| 1998 | 75° | 51° | 63° | — | — |
| 1997 | 49° | 43° | 46° | 0.08" | — |
| 1996 | 73° | 55° | 64° | — | — |
| 1995 | 70° | 56° | 63° | — | — |
| 1994 | 72° | 62° | 67° | 0.18" | — |
| 1993 | 74° | 45° | 59° | — | — |
| 1992 | 77° | 63° | 70° | 0.84" | — |
| 1991 | 79° | 45° | 62° | — | — |
| 1990 | 79° | 61° | 70° | — | — |
| 1989 | 59° | 52° | 55° | 0.08" | — |
| 1988 | 75° | 59° | 67° | 0.03" | — |
| 1987 | 78° | 48° | 63° | — | — |
| 1986 | 88° | 59° | 73° | — | — |
| 1985 | 80° | 71° | 76° | 0.05" | — |
| 1984 | 70° | 47° | 58° | 0.56" | — |
| 1983 | 82° | 66° | 74° | — | — |
| 1982 | 66° | 56° | 61° | 0.08" | — |
| 1981 | 83° | 63° | 73° | — | — |
| 1980 | 61° | 34° | 47° | — | — |
| 1979 | 79° | 63° | 71° | 0.03" | — |
| 1978 | 65° | 55° | 60° | — | — |
| 1977 | 77° | 58° | 67° | — | — |
| 1976 | 57° | 46° | 52° | 0.99" | — |
| 1975 | 81° | 65° | 73° | — | — |
| 1974 | 65° | 52° | 58° | — | — |
| 1973 | 81° | 62° | 71° | — | — |
| 1972 | 62° | 42° | 52° | 0.03" | — |
| 1971 | 75° | 53° | 64° | 5.59" | — |
55 years of data from SAN ANTONIO INCARNATE WORD