Weather on December 21
Killeen, TX
55 Years of Data
Avg High
61°F
Avg Low
37°F
Warmest
2010
74°F avg
Coldest
1983
28°F avg
About This Date
December 21st in Killeen, TX typically brings mild winter weather, with average highs around 61°F and lows near 37°F. Over 54 years of records, the warmest December 21st was in 2010 (74°F average), while the coldest was 1983 (28°F) — a 46°F range across recorded history. Rain or other precipitation has occurred on about 17% of December 21st dates historically, with the wettest December 21st recording 7.24" of rain. The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Killeen, TX? Great weather for outdoor activities.
Warming Trend
1.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 68° | 48° | 58° | — | — |
| 2024 | 60° | 29° | 45° | — | — |
| 2023 | 62° | 59° | 61° | 1.04" | — |
| 2022 | 48° | 31° | 40° | — | — |
| 2021 | 68° | 32° | 50° | — | — |
| 2019 | 57° | 41° | 49° | — | — |
| 2018 | 65° | 37° | 51° | — | — |
| 2017 | 81° | 48° | 64° | — | — |
| 2016 | 70° | 40° | 55° | — | — |
| 2015 | 75° | 48° | 62° | — | — |
| 2014 | 55° | 48° | 52° | — | — |
| 2013 | 66° | 40° | 53° | 0.89" | — |
| 2012 | 67° | 30° | 49° | — | — |
| 2011 | 53° | 40° | 46° | 0.25" | — |
| 2010warmest | 87° | 61° | 74° | — | — |
| 2009 | 68° | 41° | 55° | — | — |
| 2008 | 46° | 28° | 37° | — | — |
| 2007 | 76° | 39° | 57° | — | — |
| 2006 | 67° | 42° | 54° | — | — |
| 2005 | 50° | 34° | 42° | — | — |
| 2004 | 71° | 45° | 58° | — | — |
| 2003 | 64° | 33° | 49° | — | — |
| 2002 | 65° | 33° | 49° | — | — |
| 2001 | 63° | 31° | 47° | — | — |
| 2000 | 67° | 32° | 49° | — | — |
| 1999 | 43° | 32° | 37° | 0.43" | — |
| 1998 | 62° | 46° | 54° | — | — |
| 1997 | 75° | 39° | 57° | — | — |
| 1996 | 44° | 25° | 34° | — | — |
| 1995 | 43° | 33° | 38° | — | — |
| 1994 | 66° | 36° | 51° | — | — |
| 1993 | 50° | 26° | 38° | — | — |
| 1992 | 42° | 37° | 40° | — | — |
| 1991 | 67° | 45° | 56° | 7.24" | — |
| 1990 | 72° | 35° | 53° | 0.13" | — |
| 1989 | 46° | 17° | 32° | — | — |
| 1988 | 71° | 42° | 57° | — | — |
| 1987 | 53° | 41° | 47° | 0.15" | — |
| 1986 | 54° | 37° | 45° | — | — |
| 1985 | 55° | 32° | 44° | — | — |
| 1984 | 74° | 64° | 69° | — | — |
| 1983coldest | 35° | 22° | 28° | — | — |
| 1982 | 74° | 42° | 58° | — | — |
| 1981 | 78° | 35° | 57° | 0.03" | — |
| 1980 | 35° | 29° | 32° | — | — |
| 1979 | 61° | 37° | 49° | 0.28" | — |
| 1978 | 76° | 36° | 56° | — | — |
| 1977 | 52° | 31° | 41° | — | — |
| 1976 | 47° | 19° | 33° | — | — |
| 1975 | 58° | 28° | 43° | — | — |
| 1974 | 70° | 32° | 51° | — | — |
| 1973 | 60° | 18° | 39° | — | — |
| 1972 | 70° | 44° | 57° | — | — |
| 1971 | 66° | 37° | 52° | — | — |
54 years of data from FT HOOD