Weather on December 20
Las Cruces, NM
55 Years of Data
Avg High
58°F
Avg Low
29°F
Warmest
2025
55°F avg
Coldest
1973
30°F avg
About This Date
December 20th in Las Cruces, NM typically brings cool winter weather, with average highs around 58°F and lows near 29°F — a 29°F daily swing. Over 55 years of records, the warmest December 20th was in 2025 (55°F average), while the coldest was 1973 (30°F) — a 25°F range across recorded history. Precipitation has occurred on 11% of recorded December 20th dates, with snow falling 2% of the time (heaviest snowfall: 1.3"). The last decade has been 4.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.3°F warmer on this date compared to 20-30 years ago.
Planning for December 20th in Las Cruces, NM? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 76° | 35° | 55° | — | — |
| 2024 | 67° | 31° | 49° | — | — |
| 2023 | 60° | 38° | 49° | — | — |
| 2022 | 57° | 29° | 43° | — | — |
| 2021 | 54° | 27° | 40° | — | — |
| 2020 | 57° | 28° | 43° | — | — |
| 2019 | 50° | 26° | 38° | — | — |
| 2018 | 66° | 32° | 49° | — | — |
| 2017 | 59° | 30° | 45° | — | — |
| 2016 | 56° | 31° | 43° | — | — |
| 2015 | 68° | 28° | 48° | — | — |
| 2014 | 54° | 30° | 42° | — | — |
| 2013 | 69° | 31° | 50° | — | — |
| 2012 | 53° | 23° | 38° | — | — |
| 2011 | 45° | 35° | 40° | 0.13" | 1.3" |
| 2010 | 69° | 39° | 54° | — | — |
| 2009 | 59° | 31° | 45° | — | — |
| 2008 | 60° | 29° | 44° | — | — |
| 2007 | 62° | 27° | 44° | — | — |
| 2006 | 53° | 31° | 42° | 0.3" | — |
| 2005 | 67° | 31° | 49° | — | — |
| 2004 | 59° | 24° | 42° | — | — |
| 2003 | 60° | 25° | 42° | — | — |
| 2002 | 51° | 21° | 36° | — | — |
| 2001 | 61° | 25° | 43° | — | — |
| 2000 | 52° | 20° | 36° | — | — |
| 1999 | 56° | 27° | 41° | — | — |
| 1998 | 56° | 32° | 44° | — | — |
| 1997 | 66° | 28° | 47° | 0.79" | — |
| 1996 | 46° | 16° | 31° | — | — |
| 1995 | 50° | 30° | 40° | — | — |
| 1994 | 67° | 30° | 48° | — | — |
| 1993 | 58° | 35° | 46° | — | — |
| 1992 | 56° | 31° | 43° | — | — |
| 1991 | 51° | 40° | 45° | 0.61" | — |
| 1990 | 61° | 27° | 44° | — | — |
| 1989 | 60° | 27° | 43° | — | — |
| 1988 | 54° | 26° | 40° | — | — |
| 1987 | 54° | 36° | 45° | — | — |
| 1986 | 52° | 31° | 41° | — | — |
| 1985 | 62° | 23° | 43° | — | — |
| 1984 | 50° | 37° | 44° | 1.04" | — |
| 1983 | 50° | 22° | 36° | — | — |
| 1982 | 64° | 26° | 45° | — | — |
| 1981 | 62° | 24° | 43° | — | — |
| 1980 | 54° | 22° | 38° | — | — |
| 1979 | 64° | 28° | 46° | — | — |
| 1978 | 58° | 37° | 47° | 0.79" | — |
| 1977 | 64° | 25° | 44° | — | — |
| 1976 | 54° | 30° | 42° | — | — |
| 1975 | 56° | 27° | 41° | — | — |
| 1974 | 58° | 20° | 39° | — | — |
| 1973coldest | 45° | 15° | 30° | — | — |
| 1972 | 61° | 35° | 48° | — | — |
| 1971 | 60° | 24° | 42° | — | — |
55 years of data from STATE UNIV