Weather on September 18
Houston, TX
55 Years of Data
Avg High
89°F
Avg Low
73°F
Warmest
2005
88°F avg
Coldest
1981
65°F avg
About This Date
September 18th in Houston, TX typically brings warm fall weather, with average highs around 89°F and lows near 73°F. Over 55 years of records, the warmest September 18th was in 2005 (88°F average), while the coldest was 1981 (65°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 25% of September 18th dates historically, with the wettest September 18th recording 6.81" of rain. The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
Planning for September 18th in Houston, TX? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 92° | 74° | 83° | — | — |
| 2024 | 96° | 78° | 87° | — | — |
| 2023 | 94° | 73° | 83° | — | — |
| 2022 | 94° | 76° | 85° | — | — |
| 2021 | 95° | 75° | 85° | 0.05" | — |
| 2020 | 92° | 77° | 84° | — | — |
| 2019 | 87° | 75° | 81° | 6.81" | — |
| 2018 | 95° | 76° | 85° | — | — |
| 2017 | 93° | 75° | 84° | 3.35" | — |
| 2016 | 97° | 77° | 87° | — | — |
| 2015 | 90° | 73° | 81° | — | — |
| 2014 | 79° | 75° | 77° | 3.86" | — |
| 2013 | 92° | 77° | 84° | — | — |
| 2012 | 83° | 69° | 76° | — | — |
| 2011 | 96° | 69° | 83° | — | — |
| 2010 | 83° | 76° | 79° | 0.05" | — |
| 2009 | 82° | 73° | 78° | — | — |
| 2008 | 81° | 66° | 73° | — | — |
| 2007 | 92° | 73° | 82° | — | — |
| 2006 | 90° | 74° | 82° | 1.02" | — |
| 2005warmest | 97° | 79° | 88° | — | — |
| 2004 | 95° | 75° | 85° | — | — |
| 2003 | 86° | 78° | 82° | — | — |
| 2002 | 90° | 60° | 75° | — | — |
| 2001 | 91° | 72° | 81° | — | — |
| 2000 | 91° | 64° | 78° | — | — |
| 1999 | 93° | 67° | 80° | — | — |
| 1998 | 95° | 76° | 85° | — | — |
| 1997 | 91° | 77° | 84° | — | — |
| 1996 | 85° | 72° | 78° | 1.02" | — |
| 1995 | 92° | 74° | 83° | 1.12" | — |
| 1994 | 92° | 68° | 80° | — | — |
| 1993 | 91° | 71° | 81° | — | — |
| 1992 | 92° | 75° | 83° | 1.09" | — |
| 1991 | 90° | 74° | 82° | — | — |
| 1990 | 92° | 76° | 84° | — | — |
| 1989 | 82° | 63° | 72° | — | — |
| 1988 | 86° | 77° | 82° | — | — |
| 1987 | 88° | 72° | 80° | 1.88" | — |
| 1986 | 88° | 76° | 82° | — | — |
| 1985 | 86° | 75° | 81° | — | — |
| 1984 | 82° | 67° | 74° | — | — |
| 1983 | 82° | 71° | 77° | 0.76" | — |
| 1982 | 96° | 77° | 87° | — | — |
| 1981coldest | 73° | 57° | 65° | — | — |
| 1980 | 94° | 74° | 84° | — | — |
| 1979 | 78° | 73° | 76° | 3.61" | — |
| 1978 | 90° | 78° | 84° | — | — |
| 1977 | 91° | 77° | 84° | — | — |
| 1976 | 87° | 74° | 80° | — | — |
| 1975 | 92° | 73° | 82° | — | — |
| 1974 | 88° | 74° | 81° | — | — |
| 1973 | 84° | 68° | 76° | — | — |
| 1972 | 94° | 78° | 86° | 0.03" | — |
| 1971 | 86° | 70° | 78° | 2.74" | — |
55 years of data from HOUSTON WB CITY