Weather on May 18
New Braunfels, TX
55 Years of Data
Avg High
88°F
Avg Low
65°F
Warmest
2025
86°F avg
Coldest
1976
68°F avg
About This Date
May 18th in New Braunfels, TX typically brings warm spring weather, with average highs around 88°F and lows near 65°F. Over 55 years of records, the warmest May 18th was in 2025 (86°F average), while the coldest was 1976 (68°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 20% of May 18th dates historically, with the wettest May 18th recording 4.7" of rain. The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
Planning for May 18th in New Braunfels, TX? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 95° | 77° | 86° | — | — |
| 2024 | 98° | 62° | 80° | — | — |
| 2023 | 89° | 63° | 76° | — | — |
| 2022 | 100° | 68° | 84° | — | — |
| 2021 | 85° | 62° | 73° | 4.7" | — |
| 2020 | 95° | 65° | 80° | — | — |
| 2019 | 85° | 76° | 80° | 0.05" | — |
| 2018 | 97° | 63° | 80° | — | — |
| 2017 | 94° | 76° | 85° | — | — |
| 2016 | 79° | 64° | 71° | 0.51" | — |
| 2015 | 90° | 73° | 81° | 0.08" | — |
| 2014 | 86° | 57° | 72° | — | — |
| 2013 | 95° | 70° | 82° | — | — |
| 2012 | 86° | 57° | 72° | — | — |
| 2011 | 90° | 69° | 79° | — | — |
| 2010 | 86° | 66° | 76° | — | — |
| 2009 | 83° | 58° | 70° | — | — |
| 2008 | 94° | 53° | 73° | — | — |
| 2007 | 81° | 58° | 69° | — | — |
| 2006 | 95° | 54° | 74° | — | — |
| 2005 | 88° | 69° | 78° | — | — |
| 2004 | 88° | 72° | 80° | — | — |
| 2003 | 95° | 62° | 79° | — | — |
| 2002 | 80° | 56° | 68° | — | — |
| 2001 | 90° | 66° | 78° | — | — |
| 2000 | 87° | 73° | 80° | — | — |
| 1999 | 79° | 62° | 70° | — | — |
| 1998 | 89° | 59° | 74° | — | — |
| 1997 | 85° | 68° | 76° | — | — |
| 1996 | — | 71° | — | — | — |
| 1995 | 93° | 65° | 79° | 1.02" | — |
| 1994 | 87° | 64° | 76° | — | — |
| 1993 | 87° | 61° | 74° | — | — |
| 1992 | 84° | 66° | 75° | 2.08" | — |
| 1991 | 83° | 64° | 73° | — | — |
| 1990 | 85° | — | — | 0.66" | — |
| 1989 | 95° | 68° | 82° | — | — |
| 1988 | 88° | 61° | 74° | — | — |
| 1987 | 87° | 71° | 79° | — | — |
| 1986 | 84° | 52° | 68° | — | — |
| 1985 | 82° | 62° | 72° | 0.08" | — |
| 1984 | 76° | 65° | 70° | 0.94" | — |
| 1983 | 75° | 61° | 68° | 0.3" | — |
| 1982 | 80° | 62° | 71° | — | — |
| 1981 | 90° | 74° | 82° | — | — |
| 1980 | 88° | 66° | 77° | 1.93" | — |
| 1979 | 82° | 64° | 73° | — | — |
| 1978 | 92° | 70° | 81° | — | — |
| 1977 | 79° | 70° | 74° | — | — |
| 1976coldest | 81° | 55° | 68° | — | — |
| 1975 | 85° | 59° | 72° | — | — |
| 1974 | 89° | 76° | 82° | — | — |
| 1973 | 90° | 58° | 74° | — | — |
| 1972 | 85° | 59° | 72° | — | — |
| 1971 | 95° | 63° | 79° | — | — |
55 years of data from AUSTIN SAN ANTONIO