Weather on December 20
Round Rock, TX
55 Years of Data
About This Date
December 20th in Round Rock, TX typically brings mild winter weather, with average highs around 62°F and lows near 40°F. Over 55 years of records, the warmest December 20th was in 1978 (70°F average), while the coldest was 1983 (25°F) — a 45°F range across recorded history. Rain or other precipitation has occurred on about 25% of December 20th dates historically, with the wettest December 20th recording 3.91" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for December 20th in Round Rock, TX? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 66° | 39° | 53° | — | — |
| 2024 | 65° | 38° | 51° | — | — |
| 2023 | 65° | 37° | 51° | — | — |
| 2022 | 48° | 45° | 46° | 3.51" | — |
| 2021 | 53° | 38° | 45° | — | — |
| 2020 | 64° | 37° | 51° | 1.45" | — |
| 2019 | 58° | 30° | 44° | — | — |
| 2018 | 60° | 49° | 54° | 0.05" | — |
| 2017 | 66° | 48° | 57° | 1.45" | — |
| 2016 | 42° | 20° | 31° | — | — |
| 2015 | 63° | 35° | 49° | — | — |
| 2014 | 53° | 45° | 49° | — | — |
| 2013 | 74° | 56° | 65° | — | — |
| 2012 | 82° | 39° | 61° | — | — |
| 2011 | 67° | 43° | 55° | 1.07" | — |
| 2010 | 65° | 34° | 49° | — | — |
| 2009 | 61° | 31° | 46° | — | — |
| 2008 | 74° | 60° | 67° | — | — |
| 2007 | 66° | 48° | 57° | — | — |
| 2006 | 65° | 50° | 57° | 0.74" | — |
| 2005 | 51° | 42° | 47° | — | — |
| 2004 | 62° | 41° | 52° | — | — |
| 2003 | 62° | 34° | 48° | — | — |
| 2002 | 61° | 35° | 48° | — | — |
| 2001 | 59° | 32° | 46° | — | — |
| 2000 | 54° | 31° | 42° | — | — |
| 1999 | 65° | 38° | 51° | — | — |
| 1998 | 55° | 46° | 51° | — | — |
| 1997 | 71° | 55° | 63° | 3.91" | — |
| 1996 | 40° | 18° | 29° | — | — |
| 1995 | 50° | 33° | 42° | — | — |
| 1994 | 66° | 42° | 54° | — | — |
| 1993 | 57° | 47° | 52° | — | — |
| 1992 | 69° | 40° | 54° | 0.08" | — |
| 1991 | 70° | 46° | 58° | 2.18" | — |
| 1990 | 67° | 39° | 53° | — | — |
| 1989 | 41° | 21° | 31° | — | — |
| 1988 | 72° | 48° | 60° | 0.05" | — |
| 1987 | 69° | 40° | 54° | 2.41" | — |
| 1986 | 57° | 38° | 47° | 0.05" | — |
| 1985 | 57° | 33° | 45° | — | — |
| 1984 | 70° | 54° | 62° | — | — |
| 1983coldest | 30° | 20° | 25° | — | — |
| 1982 | 79° | 35° | 57° | — | — |
| 1981 | 52° | 45° | 48° | 0.25" | — |
| 1980 | 37° | 29° | 33° | — | — |
| 1979 | 74° | 50° | 62° | — | — |
| 1978warmest | 77° | 62° | 70° | — | — |
| 1977 | 68° | 39° | 54° | — | — |
| 1976 | 61° | 36° | 48° | 0.05" | — |
| 1975 | 60° | 29° | 44° | — | — |
| 1974 | 62° | 40° | 51° | — | — |
| 1973 | — | 23° | — | — | — |
| 1972 | 72° | 49° | 60° | — | — |
| 1971 | 79° | 44° | 61° | — | — |
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.