Weather on December 21
Houston, TX
55 Years of Data
Avg High
65°F
Avg Low
47°F
Warmest
2025
75°F avg
Coldest
1976
37°F avg
About This Date
December 21st in Houston, TX typically brings mild winter weather, with average highs around 65°F and lows near 47°F. Over 55 years of records, the warmest December 21st was in 2025 (75°F average), while the coldest was 1976 (37°F) — a 38°F range across recorded history. Rain or other precipitation has occurred on about 25% of December 21st dates historically, with the wettest December 21st recording 5.11" of rain. The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Houston, TX? Great weather for outdoor activities.
Warming Trend
1.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 82° | 68° | 75° | — | — |
| 2024 | 61° | 44° | 52° | — | — |
| 2023 | 66° | 60° | 63° | — | — |
| 2022 | 56° | 43° | 49° | — | — |
| 2021 | 65° | 42° | 53° | — | — |
| 2020 | 72° | 45° | 58° | — | — |
| 2019 | 57° | 47° | 52° | — | — |
| 2018 | 64° | 45° | 54° | — | — |
| 2017 | 79° | 50° | 64° | — | — |
| 2016 | 73° | 45° | 59° | — | — |
| 2015 | 76° | 63° | 69° | 0.13" | — |
| 2014 | 63° | 49° | 56° | — | — |
| 2013 | 76° | 54° | 65° | 1.7" | — |
| 2012 | 80° | 37° | 59° | — | — |
| 2011 | 68° | 44° | 56° | — | — |
| 2010 | 76° | 60° | 68° | — | — |
| 2009 | 60° | 35° | 48° | — | — |
| 2008 | 78° | 52° | 65° | — | — |
| 2007 | 78° | 48° | 63° | — | — |
| 2006 | 77° | 59° | 68° | 0.89" | — |
| 2005 | 48° | 40° | 44° | — | — |
| 2004 | 72° | 61° | 66° | 0.99" | — |
| 2003 | 70° | 40° | 55° | — | — |
| 2002 | 71° | 44° | 58° | — | — |
| 2001 | 66° | 41° | 54° | — | — |
| 2000 | 59° | 35° | 47° | — | — |
| 1999 | 52° | 37° | 44° | 0.18" | — |
| 1998 | 78° | 38° | 58° | — | — |
| 1997 | 64° | 48° | 56° | 5.11" | — |
| 1996 | 70° | 53° | 61° | — | — |
| 1995 | 45° | 40° | 42° | — | — |
| 1994 | 72° | 50° | 61° | — | — |
| 1993 | 54° | 38° | 46° | — | — |
| 1992 | 64° | 48° | 56° | 5.08" | — |
| 1991 | 66° | 62° | 64° | 0.33" | — |
| 1990 | 78° | 35° | 57° | 1.14" | — |
| 1989 | 44° | 35° | 40° | — | — |
| 1988 | 73° | 62° | 68° | 0.03" | — |
| 1987 | 52° | 50° | 51° | 3.38" | — |
| 1986 | 52° | 47° | 49° | 0.08" | — |
| 1985 | 64° | 40° | 52° | — | — |
| 1984 | 76° | 64° | 70° | — | — |
| 1983 | 56° | 31° | 43° | 1.22" | — |
| 1982 | 75° | 58° | 66° | — | — |
| 1981 | 77° | 61° | 69° | 0.03" | — |
| 1980 | 43° | 36° | 39° | — | — |
| 1979 | 72° | 63° | 67° | — | — |
| 1978 | 65° | 46° | 55° | — | — |
| 1977 | 50° | 40° | 45° | — | — |
| 1976coldest | 46° | 28° | 37° | — | — |
| 1975 | 56° | 39° | 47° | — | — |
| 1974 | 72° | 48° | 60° | — | — |
| 1973 | 54° | 31° | 42° | — | — |
| 1972 | 60° | 44° | 52° | — | — |
| 1971 | 78° | 57° | 68° | — | — |
55 years of data from HOUSTON WB CITY