Weather on September 27
Round Rock, TX
55 Years of Data
Avg High
88°F
Avg Low
62°F
Warmest
1977
87°F avg
Coldest
2000
61°F avg
About This Date
September 27th in Round Rock, TX typically brings warm fall weather, with average highs around 88°F and lows near 62°F — a 26°F daily swing. Over 55 years of records, the warmest September 27th was in 1977 (87°F average), while the coldest was 2000 (61°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 15% of September 27th dates historically, with the wettest September 27th recording 12.6" of rain. The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
Planning for September 27th in Round Rock, TX? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 91° | 61° | 76° | — | — |
| 2024 | 87° | 59° | 73° | — | — |
| 2023 | 94° | 70° | 82° | — | — |
| 2022 | 91° | 57° | 74° | — | — |
| 2021 | 89° | 60° | 75° | — | — |
| 2020 | 87° | 66° | 77° | — | — |
| 2019 | 96° | 73° | 85° | — | — |
| 2018 | 84° | 60° | 72° | — | — |
| 2017 | 80° | 70° | 75° | 4.32" | — |
| 2016 | 70° | 64° | 67° | 0.13" | — |
| 2015 | 91° | 63° | 77° | — | — |
| 2014 | 82° | 65° | 73° | — | — |
| 2013 | 91° | 63° | 77° | — | — |
| 2012 | 91° | 66° | 79° | — | — |
| 2011 | 102° | 67° | 84° | — | — |
| 2010 | 85° | 54° | 69° | — | — |
| 2009 | 89° | 63° | 76° | — | — |
| 2008 | 88° | 59° | 73° | — | — |
| 2007 | 92° | 72° | 82° | — | — |
| 2006 | 87° | 56° | 71° | — | — |
| 2005 | 105° | 67° | 86° | — | — |
| 2004 | 87° | 64° | 76° | — | — |
| 2003 | 82° | 64° | 73° | — | — |
| 2002 | 90° | 62° | 76° | — | — |
| 2001 | 77° | 52° | 64° | — | — |
| 2000coldest | 74° | 48° | 61° | — | — |
| 1999 | 94° | 71° | 82° | — | — |
| 1998 | 90° | 74° | 82° | — | — |
| 1997 | 85° | 56° | 70° | — | — |
| 1996 | 86° | 54° | 70° | 1.14" | — |
| 1995 | 84° | 59° | 72° | — | — |
| 1994 | 90° | 59° | 74° | — | — |
| 1993 | 80° | 48° | 64° | 1.07" | — |
| 1992 | 90° | 69° | 79° | — | — |
| 1991 | 86° | 56° | 71° | — | — |
| 1990 | 87° | 65° | 76° | — | — |
| 1989 | 80° | 52° | 66° | — | — |
| 1988 | 94° | 56° | 75° | — | — |
| 1987 | 85° | 64° | 74° | — | — |
| 1986 | 92° | 73° | 82° | — | — |
| 1985 | 94° | 52° | 73° | — | — |
| 1984 | 74° | 55° | 64° | — | — |
| 1983 | 86° | 60° | 73° | — | — |
| 1982 | 93° | 61° | 77° | — | — |
| 1981 | 96° | 64° | 80° | — | — |
| 1980 | 79° | 65° | 72° | 1.32" | — |
| 1979 | 92° | 59° | 75° | — | — |
| 1978 | 77° | 61° | 69° | — | — |
| 1977warmest | 102° | 71° | 87° | — | — |
| 1976 | 93° | 64° | 79° | 0.69" | — |
| 1975 | 87° | — | — | — | — |
| 1974 | 86° | 57° | 72° | — | — |
| 1973 | 86° | 66° | 76° | 12.6" | — |
| 1972 | 86° | 70° | 78° | 1.14" | — |
| 1971 | 89° | 72° | 80° | — | — |
55 years of data from GEORGETOWN