Weather on September 17
Round Rock, TX
55 Years of Data
Avg High
90°F
Avg Low
66°F
Warmest
2006
86°F avg
Coldest
1995
60°F avg
About This Date
September 17th in Round Rock, TX typically brings hot fall weather, with average highs around 90°F and lows near 66°F. Over 53 years of records, the warmest September 17th was in 2006 (86°F average), while the coldest was 1995 (60°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 19% of September 17th dates historically, with the wettest September 17th recording 4.95" of rain. The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
Planning for September 17th in Round Rock, TX? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 95° | 67° | 81° | — | — |
| 2024 | 96° | 70° | 83° | — | — |
| 2023 | 84° | 67° | 75° | 1.55" | — |
| 2022 | 93° | 74° | 83° | — | — |
| 2021 | 91° | 68° | 80° | — | — |
| 2020 | 90° | 72° | 81° | — | — |
| 2019 | 97° | 71° | 84° | — | — |
| 2018 | 88° | 68° | 78° | — | — |
| 2017 | 91° | 72° | 81° | — | — |
| 2016 | 94° | 71° | 82° | — | — |
| 2015 | 89° | 73° | 81° | 0.05" | — |
| 2014 | 92° | 72° | 82° | 1.42" | — |
| 2013 | 91° | 70° | 80° | — | — |
| 2012 | 70° | 62° | 66° | 3.58" | — |
| 2011 | 90° | 73° | 81° | — | — |
| 2010 | 93° | 70° | 81° | — | — |
| 2009 | 86° | 65° | 75° | — | — |
| 2008 | 82° | 57° | 70° | — | — |
| 2007 | 90° | 65° | 77° | — | — |
| 2006warmest | 95° | 77° | 86° | — | — |
| 2004 | 84° | 67° | 75° | — | — |
| 2003 | 88° | 67° | 77° | — | — |
| 2002 | 79° | 69° | 74° | — | — |
| 2001 | 88° | 67° | 77° | — | — |
| 2000 | 89° | 56° | 72° | — | — |
| 1999 | 92° | 62° | 77° | — | — |
| 1998 | 74° | 71° | 72° | 1.3" | — |
| 1997 | 96° | 73° | 85° | — | — |
| 1996 | 91° | 68° | 80° | — | — |
| 1995coldest | 97° | 23° | 60° | — | — |
| 1994 | 85° | 65° | 75° | — | — |
| 1992 | 87° | 67° | 77° | — | — |
| 1991 | 90° | 68° | 79° | — | — |
| 1990 | 90° | 69° | 79° | 4.95" | — |
| 1989 | 85° | 55° | 70° | — | — |
| 1988 | 90° | 65° | 77° | 0.1" | — |
| 1987 | 96° | 71° | 84° | 0.3" | — |
| 1986 | 90° | 74° | 82° | — | — |
| 1985 | 87° | 65° | 76° | — | — |
| 1984 | 85° | 58° | 71° | — | — |
| 1983 | 94° | 68° | 81° | — | — |
| 1982 | 98° | 65° | 81° | — | — |
| 1981 | 82° | 62° | 72° | — | — |
| 1980 | 99° | 67° | 83° | — | — |
| 1979 | 88° | 44° | 66° | — | — |
| 1978 | 94° | 71° | 82° | — | — |
| 1977 | 98° | 67° | 82° | — | — |
| 1976 | 94° | 70° | 82° | — | — |
| 1975 | 89° | 63° | 76° | 1.7" | — |
| 1974 | 89° | 70° | 79° | — | — |
| 1973 | 90° | 67° | 78° | — | — |
| 1972 | 97° | 73° | 85° | 0.89" | — |
| 1971 | 92° | 64° | 78° | — | — |
53 years of data from GEORGETOWN