Weather on December 20
Round Rock, TX
55 Years of Data
Avg High
62°F
Avg Low
40°F
Warmest
1978
70°F avg
Coldest
1983
25°F avg
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° | — | — |
55 years of data from GEORGETOWN