Weather on October 21
Round Rock, TX
55 Years of Data
About This Date
October 21st 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 54 years of records, the warmest October 21st was in 2004 (80°F average), while the coldest was 1976 (49°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 20% of October 21st dates historically, with the wettest October 21st recording 8.89" of rain. The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in Round Rock, TX? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 92° | 65° | 78° | — | — |
| 2024 | 83° | 54° | 68° | — | — |
| 2023 | 95° | 55° | 75° | — | — |
| 2022 | 84° | 47° | 65° | — | — |
| 2021 | 82° | 62° | 72° | — | — |
| 2020 | 88° | 71° | 79° | — | — |
| 2019 | 90° | 59° | 74° | 1.02" | — |
| 2018 | 64° | 53° | 59° | — | — |
| 2017 | 80° | 63° | 71° | 0.08" | — |
| 2016 | 79° | 53° | 66° | — | — |
| 2015 | 84° | 54° | 69° | — | — |
| 2014 | 79° | 56° | 67° | — | — |
| 2013 | 72° | 40° | 56° | — | — |
| 2012 | 84° | 55° | 70° | — | — |
| 2011 | 79° | 42° | 60° | — | — |
| 2010 | 87° | 62° | 75° | — | — |
| 2009 | 81° | 54° | 67° | 0.13" | — |
| 2008 | 83° | 54° | 68° | — | — |
| 2007 | 90° | 53° | 71° | — | — |
| 2005 | 88° | 55° | 71° | — | — |
| 2004warmest | 87° | 73° | 80° | — | — |
| 2003 | 85° | 57° | 71° | — | — |
| 2002 | 68° | 56° | 62° | 0.41" | — |
| 2001 | 79° | 61° | 70° | — | — |
| 2000 | 73° | 63° | 68° | 0.1" | — |
| 1999 | 73° | 44° | 59° | — | — |
| 1998 | 64° | 54° | 59° | 0.51" | — |
| 1997 | 82° | 58° | 70° | — | — |
| 1996 | 84° | 67° | 75° | — | — |
| 1995 | 89° | 45° | 67° | — | — |
| 1994 | 87° | 72° | 79° | — | — |
| 1993 | 65° | 54° | 59° | 0.18" | — |
| 1992 | 83° | 61° | 72° | — | — |
| 1991 | 79° | 50° | 64° | — | — |
| 1990 | 84° | 49° | 66° | 2.03" | — |
| 1989 | 79° | 42° | 60° | — | — |
| 1988 | 88° | 63° | 75° | — | — |
| 1987 | 71° | 47° | 59° | — | — |
| 1986 | 75° | 54° | 64° | — | — |
| 1985 | 73° | 64° | 69° | — | — |
| 1984 | 83° | 61° | 72° | 8.89" | — |
| 1983 | 79° | 48° | 63° | 0.36" | — |
| 1982 | 70° | 51° | 60° | — | — |
| 1981 | 80° | 55° | 68° | — | — |
| 1980 | 81° | 46° | 63° | — | — |
| 1979 | 94° | 64° | 79° | — | — |
| 1978 | 87° | 47° | 67° | — | — |
| 1977 | 91° | 60° | 76° | — | — |
| 1976coldest | 65° | 34° | 49° | — | — |
| 1975 | 84° | 57° | 71° | — | — |
| 1974 | 78° | 59° | 69° | — | — |
| 1973 | 81° | 47° | 64° | — | — |
| 1972 | 81° | 61° | 71° | 0.3" | — |
| 1971 | 77° | 52° | 64° | — | — |
Round Rock, TX Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Round Rock, TX Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Round Rock, TX Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Round Rock, TX
Round Rock, TX has no months that meet our "pleasant" threshold — every season has tradeoffs.