Weather on December 20
Fort Collins, CO
55 Years of Data
Avg High
43°F
Avg Low
17°F
Warmest
1981
46°F avg
Coldest
1990
-8°F avg
About This Date
December 20th in Fort Collins, CO typically brings chilly winter weather, with average highs around 43°F and lows near 17°F — a 26°F daily swing. Over 55 years of records, the warmest December 20th was in 1981 (46°F average), while the coldest was 1990 (-8°F) — a 54°F range across recorded history. Precipitation has occurred on 15% of recorded December 20th dates, with snow falling 15% of the time (heaviest snowfall: 12.2"). The last decade has been 8.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 8.6°F warmer on this date compared to 20-30 years ago.
Planning for December 20th in Fort Collins, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
2.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 64° | 29° | 46° | 0.03" | — |
| 2024 | 66° | 19° | 43° | — | — |
| 2023 | 55° | 32° | 44° | — | — |
| 2022 | 41° | 14° | 28° | — | — |
| 2021 | 54° | 22° | 38° | — | — |
| 2020 | 53° | 21° | 37° | — | — |
| 2019 | 49° | 16° | 32° | — | — |
| 2018 | 47° | 21° | 34° | — | — |
| 2017 | 59° | 24° | 42° | — | — |
| 2016 | 49° | 26° | 37° | — | — |
| 2015 | 49° | 25° | 37° | — | — |
| 2014 | 51° | 21° | 36° | — | — |
| 2013 | 26° | 15° | 21° | — | — |
| 2012 | 45° | 5° | 25° | — | — |
| 2011 | 43° | 14° | 28° | — | — |
| 2010 | 50° | 27° | 38° | — | — |
| 2009 | 52° | 22° | 37° | — | — |
| 2008 | 35° | 18° | 26° | — | — |
| 2007 | 50° | 19° | 35° | — | — |
| 2006 | 35° | 25° | 30° | 3.3" | 12.2" |
| 2005 | 40° | 17° | 28° | — | — |
| 2004 | 56° | 34° | 45° | — | — |
| 2003 | 59° | 24° | 42° | — | — |
| 2002 | 41° | 13° | 27° | — | — |
| 2001 | 44° | 18° | 31° | — | — |
| 2000 | 47° | 19° | 33° | 0.03" | 0.1" |
| 1999 | 38° | 16° | 27° | — | 0.1" |
| 1998 | 2° | -3° | 0° | 0.51" | 3.2" |
| 1997 | 37° | 23° | 30° | — | — |
| 1996 | 53° | 11° | 32° | — | — |
| 1995 | 43° | 11° | 27° | — | — |
| 1994 | 57° | 15° | 36° | — | — |
| 1993 | 34° | 3° | 18° | — | — |
| 1992 | 34° | 1° | 17° | — | — |
| 1991 | 36° | 27° | 31° | 0.03" | 0.2" |
| 1990coldest | -2° | -14° | -8° | 0.15" | 1.1" |
| 1989 | 40° | 3° | 21° | — | — |
| 1988 | 43° | 24° | 33° | — | — |
| 1987 | 29° | 7° | 18° | 0.1" | 0.7" |
| 1986 | 43° | 17° | 30° | — | — |
| 1985 | 52° | 23° | 37° | — | — |
| 1984 | 43° | 11° | 27° | — | — |
| 1983 | 10° | -9° | 1° | 0.1" | 0.6" |
| 1982 | 50° | 20° | 35° | — | — |
| 1981warmest | 62° | 30° | 46° | — | — |
| 1980 | 26° | 16° | 21° | — | — |
| 1979 | 53° | 23° | 38° | — | — |
| 1978 | 39° | 15° | 27° | — | — |
| 1977 | 35° | 20° | 27° | — | — |
| 1976 | 39° | 8° | 24° | — | — |
| 1975 | 44° | 11° | 27° | — | — |
| 1974 | 38° | 16° | 27° | — | — |
| 1973 | 34° | -1° | 17° | — | — |
| 1972 | 48° | 33° | 41° | — | — |
| 1971 | 52° | 21° | 36° | — | — |
55 years of data from FT COLLINS