Weather on September 19
Round Rock, TX
55 Years of Data
Avg High
90°F
Avg Low
66°F
Warmest
2024
86°F avg
Coldest
1995
39°F avg
About This Date
September 19th in Round Rock, TX typically brings hot fall weather, with average highs around 90°F and lows near 66°F. Over 55 years of records, the warmest September 19th was in 2024 (86°F average), while the coldest was 1995 (39°F) — a 47°F range across recorded history. Rain or other precipitation has occurred on about 16% of September 19th dates historically, with the wettest September 19th recording 11.68" of rain. The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
Planning for September 19th in Round Rock, 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 |
|---|---|---|---|---|---|
| 2025 | 95° | 69° | 82° | — | — |
| 2024warmest | 96° | 75° | 86° | — | — |
| 2023 | 94° | 65° | 79° | — | — |
| 2022 | 95° | 74° | 84° | — | — |
| 2021 | 95° | 69° | 82° | — | — |
| 2020 | 85° | 65° | 75° | — | — |
| 2019 | 97° | 72° | 84° | — | — |
| 2018 | 92° | 69° | 80° | — | — |
| 2017 | 94° | 73° | 83° | — | — |
| 2016 | 96° | 72° | 84° | — | — |
| 2015 | 93° | 72° | 82° | — | — |
| 2014 | 86° | 71° | 79° | 7.72" | — |
| 2013 | 95° | 70° | 82° | — | — |
| 2012 | 84° | 58° | 71° | — | — |
| 2011 | 96° | 68° | 82° | — | — |
| 2010 | 88° | 71° | 79° | — | — |
| 2009 | 85° | 68° | 76° | — | — |
| 2008 | 80° | 58° | 69° | — | — |
| 2007 | 89° | 71° | 80° | — | — |
| 2006 | 89° | 57° | 73° | — | — |
| 2005 | 97° | 68° | 82° | — | — |
| 2004 | 95° | 70° | 82° | — | — |
| 2003 | 85° | 64° | 74° | — | — |
| 2002 | 91° | 74° | 82° | 0.15" | — |
| 2001 | 91° | 74° | 82° | — | — |
| 2000 | 92° | 57° | 74° | — | — |
| 1999 | 93° | 67° | 80° | — | — |
| 1998 | 88° | 71° | 79° | — | — |
| 1997 | 97° | 71° | 84° | — | — |
| 1996 | 91° | 67° | 79° | 11.68" | — |
| 1995coldest | 94° | -16° | 39° | — | — |
| 1994 | 87° | 60° | 74° | — | — |
| 1993 | 91° | 68° | 80° | — | — |
| 1992 | 93° | 72° | 82° | — | — |
| 1991 | 90° | 53° | 71° | 0.81" | — |
| 1990 | 94° | 74° | 84° | — | — |
| 1989 | 89° | 58° | 73° | — | — |
| 1988 | 93° | 75° | 84° | — | — |
| 1987 | 72° | 65° | 68° | 0.3" | — |
| 1986 | 93° | 72° | 82° | — | — |
| 1985 | 92° | 68° | 80° | — | — |
| 1984 | 86° | 63° | 74° | — | — |
| 1983 | 85° | 65° | 75° | 0.76" | — |
| 1982 | 100° | 70° | 85° | 3.43" | — |
| 1981 | 81° | 40° | 60° | — | — |
| 1980 | 94° | 68° | 81° | 3.63" | — |
| 1979 | 70° | 62° | 66° | 0.91" | — |
| 1978 | 96° | 70° | 83° | — | — |
| 1977 | 98° | 72° | 85° | — | — |
| 1976 | 90° | 72° | 81° | — | — |
| 1975 | 94° | 74° | 84° | — | — |
| 1974 | 89° | 72° | 80° | — | — |
| 1973 | 90° | 65° | 77° | — | — |
| 1972 | 96° | 72° | 84° | — | — |
| 1971 | 75° | 56° | 65° | — | — |
55 years of data from GEORGETOWN