Weather on December 20
Greeley, CO
55 Years of Data
Avg High
41°F
Avg Low
17°F
Warmest
2023
47°F avg
Coldest
1990
-8°F avg
About This Date
December 20th in Greeley, CO typically brings chilly winter weather, with average highs around 41°F and lows near 17°F. Over 55 years of records, the warmest December 20th was in 2023 (47°F average), while the coldest was 1990 (-8°F) — a 55°F range across recorded history. Precipitation has occurred on 9% of recorded December 20th dates, with snow falling 9% of the time (heaviest snowfall: 12.1"). The last decade has been 9.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 9.7°F warmer on this date compared to 20-30 years ago.
Planning for December 20th in Greeley, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
2.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 64° | 30° | 47° | — | — |
| 2024 | 56° | 18° | 37° | — | — |
| 2023warmest | 59° | 36° | 47° | — | — |
| 2022 | 42° | 15° | 29° | — | — |
| 2021 | 56° | 28° | 42° | — | — |
| 2020 | 42° | 22° | 32° | — | — |
| 2019 | 44° | 17° | 31° | — | — |
| 2018 | 49° | 26° | 37° | — | — |
| 2017 | 58° | 24° | 41° | — | — |
| 2016 | 46° | 21° | 34° | — | — |
| 2015 | 42° | 10° | 26° | — | — |
| 2014 | 48° | 19° | 34° | — | — |
| 2013 | 32° | 15° | 24° | — | — |
| 2012 | 47° | 5° | 26° | — | — |
| 2011 | 41° | 14° | 28° | — | — |
| 2010 | 50° | 35° | 43° | — | — |
| 2009 | 54° | 20° | 37° | — | — |
| 2008 | 31° | 18° | 24° | — | — |
| 2007 | 38° | 12° | 25° | — | — |
| 2006 | 36° | 24° | 30° | 2.79" | 12.1" |
| 2005 | 41° | 16° | 28° | — | — |
| 2004 | 56° | 36° | 46° | — | — |
| 2003 | 46° | 22° | 34° | — | — |
| 2002 | 39° | 20° | 29° | — | — |
| 2001 | 44° | 21° | 33° | — | — |
| 2000 | 33° | 14° | 24° | — | — |
| 1999 | 32° | 15° | 24° | — | — |
| 1998 | 3° | -2° | 1° | 0.33" | 2.4" |
| 1997 | 34° | 25° | 29° | — | — |
| 1996 | 54° | 10° | 32° | — | — |
| 1995 | 42° | 13° | 27° | — | — |
| 1994 | 55° | 17° | 36° | — | — |
| 1993 | 31° | 10° | 20° | — | — |
| 1992 | 37° | -2° | 18° | — | — |
| 1991 | 38° | 27° | 32° | — | — |
| 1990coldest | -4° | -12° | -8° | 0.3" | 1.5" |
| 1989 | 33° | 1° | 17° | — | — |
| 1988 | 41° | 26° | 34° | — | — |
| 1987 | 31° | 18° | 24° | 0.08" | 0.3" |
| 1986 | 44° | 16° | 30° | — | — |
| 1985 | 51° | 19° | 35° | — | — |
| 1984 | 38° | 10° | 24° | — | — |
| 1983 | 5° | -5° | 0° | 0.15" | 0.5" |
| 1982 | 46° | 19° | 33° | — | — |
| 1981 | 64° | 24° | 44° | — | — |
| 1980 | 26° | 13° | 19° | — | — |
| 1979 | 48° | 20° | 34° | — | — |
| 1978 | 36° | 15° | 25° | — | — |
| 1977 | 36° | 17° | 26° | — | — |
| 1976 | 41° | 7° | 24° | — | — |
| 1975 | 40° | 12° | 26° | — | — |
| 1974 | 40° | 19° | 29° | — | — |
| 1973 | 32° | -6° | 13° | — | — |
| 1972 | 45° | 27° | 36° | — | — |
| 1971 | 52° | 21° | 36° | — | — |
55 years of data from GREELEY UNC