Weather on October 18
Round Rock, TX
55 Years of Data
Avg High
81°F
Avg Low
55°F
Warmest
1971
81°F avg
Coldest
1999
52°F avg
About This Date
October 18th in Round Rock, TX typically brings warm fall weather, with average highs around 81°F and lows near 55°F — a 26°F daily swing. Over 55 years of records, the warmest October 18th was in 1971 (81°F average), while the coldest was 1999 (52°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 16% of October 18th dates historically, with the wettest October 18th recording 5.69" of rain. The last decade has been 2.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.5°F cooler on this date compared to 20-30 years ago.
Planning for October 18th in Round Rock, 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 | 90° | 64° | 77° | — | — |
| 2024 | 74° | 51° | 62° | — | — |
| 2023 | 77° | 41° | 59° | — | — |
| 2022 | 72° | 52° | 62° | 0.05" | — |
| 2021 | 72° | 46° | 59° | — | — |
| 2020 | 77° | 61° | 69° | — | — |
| 2019 | 74° | 47° | 60° | — | — |
| 2018 | 56° | 49° | 52° | 0.1" | — |
| 2017 | 76° | 45° | 60° | — | — |
| 2016 | 90° | 72° | 81° | — | — |
| 2015 | 84° | 51° | 68° | — | — |
| 2014 | 86° | 60° | 73° | — | — |
| 2013 | 72° | 49° | 60° | — | — |
| 2012 | 91° | 60° | 76° | — | — |
| 2011 | 89° | 56° | 72° | — | — |
| 2010 | 85° | 57° | 71° | — | — |
| 2009 | 75° | 50° | 63° | — | — |
| 2008 | 75° | 52° | 63° | — | — |
| 2007 | 90° | 69° | 79° | — | — |
| 2006 | 90° | 60° | 75° | — | — |
| 2005 | 85° | 59° | 72° | — | — |
| 2004 | 89° | 74° | 81° | — | — |
| 2003 | 83° | 51° | 67° | — | — |
| 2002 | 78° | 60° | 69° | — | — |
| 2001 | 71° | 42° | 57° | — | — |
| 2000 | 73° | 61° | 67° | 4.19" | — |
| 1999coldest | 58° | 46° | 52° | 0.3" | — |
| 1998 | 73° | 61° | 67° | 5.69" | — |
| 1997 | 78° | 48° | 63° | — | — |
| 1996 | 92° | 51° | 71° | — | — |
| 1995 | 84° | 53° | 69° | — | — |
| 1994 | 81° | 68° | 74° | 0.1" | — |
| 1993 | 91° | 70° | 80° | — | — |
| 1992 | 78° | 59° | 69° | — | — |
| 1991 | 87° | 60° | 74° | — | — |
| 1990 | 88° | 52° | 70° | — | — |
| 1989 | 65° | 46° | 55° | 0.1" | — |
| 1988 | 91° | 62° | 77° | — | — |
| 1987 | 86° | 60° | 73° | — | — |
| 1986 | 78° | 50° | 64° | — | — |
| 1985 | 81° | 68° | 74° | 1.09" | — |
| 1984 | 78° | 54° | 66° | — | — |
| 1983 | 86° | 62° | 74° | — | — |
| 1982 | 86° | 59° | 73° | — | — |
| 1981 | 80° | 50° | 65° | — | — |
| 1980 | 82° | 54° | 68° | — | — |
| 1979 | 90° | 59° | 74° | — | — |
| 1978 | 86° | 41° | 64° | — | — |
| 1977 | 90° | 54° | 72° | — | — |
| 1976 | 73° | 44° | 59° | — | — |
| 1975 | 78° | 40° | 59° | — | — |
| 1974 | 85° | 48° | 66° | — | — |
| 1973 | 74° | 45° | 59° | — | — |
| 1972 | 92° | 70° | 81° | — | — |
| 1971warmest | 89° | 73° | 81° | 0.43" | — |
55 years of data from GEORGETOWN