Weather on December 21
Waco, TX
55 Years of Data
Avg High
61°F
Avg Low
35°F
Warmest
1984
67°F avg
Coldest
1983
28°F avg
About This Date
December 21st in Waco, TX typically brings mild winter weather, with average highs around 61°F and lows near 35°F — a 26°F daily swing. Over 55 years of records, the warmest December 21st was in 1984 (67°F average), while the coldest was 1983 (28°F) — a 39°F range across recorded history. Rain or other precipitation has occurred on about 16% of December 21st dates historically, with the wettest December 21st recording 15.04" 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 21st in Waco, TX? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 68° | 47° | 57° | — | — |
| 2024 | 58° | 26° | 42° | — | — |
| 2023 | 69° | 32° | 51° | — | — |
| 2022 | 56° | 28° | 42° | — | — |
| 2021 | 66° | 31° | 49° | — | — |
| 2020 | 73° | 31° | 52° | — | — |
| 2019 | 47° | 34° | 40° | 0.18" | — |
| 2018 | 61° | 35° | 48° | — | — |
| 2017 | 66° | 42° | 54° | — | — |
| 2016 | 55° | 31° | 43° | — | — |
| 2015 | 65° | 61° | 63° | — | — |
| 2014 | 67° | 45° | 56° | — | — |
| 2013 | 70° | 36° | 53° | 1.78" | — |
| 2012 | 53° | 30° | 42° | — | — |
| 2011 | 66° | 36° | 51° | — | — |
| 2010 | 74° | 41° | 57° | — | — |
| 2009 | 62° | 33° | 48° | — | — |
| 2008 | 77° | 30° | 54° | — | — |
| 2007 | 68° | 37° | 53° | — | — |
| 2006 | 55° | 40° | 47° | 0.18" | — |
| 2005 | 54° | 34° | 44° | — | — |
| 2004 | 69° | 41° | 55° | — | — |
| 2003 | 62° | 35° | 49° | — | — |
| 2002 | 71° | 33° | 52° | — | — |
| 2001 | 60° | 33° | 47° | — | — |
| 2000 | 55° | 32° | 44° | — | — |
| 1999 | 63° | 33° | 48° | — | — |
| 1998 | 70° | 23° | 46° | — | — |
| 1997 | 61° | 41° | 51° | 15.04" | — |
| 1996 | 55° | 27° | 41° | — | — |
| 1995 | 41° | 33° | 37° | — | — |
| 1994 | 66° | 36° | 51° | — | — |
| 1993 | 50° | 28° | 39° | — | — |
| 1992 | 37° | 42° | 40° | 0.1" | — |
| 1991 | 66° | 45° | 55° | 5.72" | — |
| 1990 | 70° | 31° | 50° | — | — |
| 1989 | 46° | 19° | 33° | — | — |
| 1988 | 69° | 40° | 54° | — | — |
| 1987 | 50° | 40° | 45° | — | — |
| 1986 | 54° | 37° | 45° | — | — |
| 1985 | 57° | 28° | 43° | 0.05" | — |
| 1984warmest | 72° | 62° | 67° | — | — |
| 1983coldest | 36° | 21° | 28° | 0.05" | — |
| 1982 | 70° | 39° | 54° | — | — |
| 1981 | 62° | 39° | 51° | 0.05" | — |
| 1980 | 39° | 28° | 34° | — | — |
| 1979 | 72° | 49° | 60° | — | — |
| 1978 | 72° | 33° | 52° | — | — |
| 1977 | 54° | 33° | 43° | — | — |
| 1976 | 47° | 21° | 34° | — | — |
| 1975 | 62° | 28° | 45° | — | — |
| 1974 | 62° | 36° | 49° | — | — |
| 1973 | 43° | 24° | 33° | — | — |
| 1972 | 66° | 45° | 55° | — | — |
| 1971 | 75° | 44° | 60° | — | — |
55 years of data from WACO