Weather on December 20
Alamosa, CO
55 Years of Data
Avg High
35°F
Avg Low
0°F
Warmest
1998
35°F avg
Coldest
1992
-6°F avg
About This Date
December 20th in Alamosa, CO typically brings cold winter weather, with average highs around 35°F and lows near 0°F — a 35°F daily swing. Over 55 years of records, the warmest December 20th was in 1998 (35°F average), while the coldest was 1992 (-6°F) — a 41°F range across recorded history. Precipitation has occurred on 13% of recorded December 20th dates, with snow falling 11% of the time (heaviest snowfall: 2"). 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 Alamosa, CO? Bundle up with warm layers and protect extremities from the cold.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | — | 13° | — | — | — |
| 2024 | 48° | 3° | 26° | — | — |
| 2023 | 36° | 7° | 21° | — | — |
| 2022 | 37° | -6° | 16° | — | — |
| 2021 | 41° | -3° | 19° | — | — |
| 2020 | 34° | 1° | 17° | — | — |
| 2019 | 26° | -11° | 8° | — | — |
| 2018 | 46° | 8° | 27° | — | — |
| 2017 | 47° | 5° | 26° | — | — |
| 2016 | 23° | -7° | 8° | — | — |
| 2015 | 38° | 4° | 21° | — | — |
| 2014 | 36° | 8° | 22° | — | — |
| 2013 | 33° | 0° | 17° | — | — |
| 2012 | 31° | -21° | 5° | 0.05" | 0.2" |
| 2011 | 35° | -1° | 17° | — | — |
| 2010 | 43° | 18° | 30° | — | — |
| 2009 | 35° | -2° | 17° | — | — |
| 2008 | 35° | 12° | 24° | — | — |
| 2007 | 27° | -7° | 10° | — | — |
| 2006 | 37° | 19° | 28° | 0.15" | 1.8" |
| 2005 | 46° | 3° | 25° | — | — |
| 2004 | 50° | -2° | 24° | — | — |
| 2003 | 38° | -1° | 19° | — | — |
| 2002 | 36° | -6° | 15° | — | — |
| 2001 | 39° | -4° | 18° | — | — |
| 2000 | 39° | 1° | 20° | — | — |
| 1999 | 34° | -3° | 16° | — | — |
| 1998warmest | 40° | 30° | 35° | — | — |
| 1997 | 21° | -8° | 7° | — | — |
| 1996 | 33° | -7° | 13° | — | — |
| 1995 | 31° | 0° | 15° | — | — |
| 1994 | 40° | 3° | 21° | — | — |
| 1993 | 25° | -11° | 7° | 0.03" | — |
| 1992coldest | 14° | -27° | -6° | — | — |
| 1991 | 36° | 1° | 18° | 0.03" | 0.1" |
| 1990 | 28° | 16° | 22° | 0.43" | 2" |
| 1989 | 39° | -5° | 17° | — | — |
| 1988 | 37° | -1° | 18° | — | — |
| 1987 | 29° | 6° | 17° | — | — |
| 1986 | 32° | 0° | 16° | — | — |
| 1985 | 37° | 0° | 19° | — | — |
| 1984 | 34° | -1° | 17° | 0.15" | 1" |
| 1983 | 33° | 7° | 20° | 0.03" | 0.1" |
| 1982 | 43° | 3° | 23° | — | — |
| 1981 | 56° | 11° | 33° | — | — |
| 1980 | 35° | 7° | 21° | — | — |
| 1979 | 42° | -2° | 20° | — | — |
| 1978 | 25° | -2° | 11° | — | — |
| 1977 | 27° | -3° | 12° | — | — |
| 1976 | 29° | -12° | 9° | — | — |
| 1975 | 30° | -8° | 11° | — | — |
| 1974 | 33° | -3° | 15° | — | — |
| 1973 | 34° | -9° | 12° | — | — |
| 1972 | 34° | -4° | 15° | — | — |
| 1971 | 25° | -16° | 4° | — | — |
55 years of data from ALAMOSA 1E