Weather on December 9
Fort Collins, CO
55 Years of Data
Avg High
45°F
Avg Low
18°F
Warmest
1984
51°F avg
Coldest
1972
-2°F avg
About This Date
December 9th in Fort Collins, CO typically brings chilly winter weather, with average highs around 45°F and lows near 18°F — a 27°F daily swing. Over 55 years of records, the warmest December 9th was in 1984 (51°F average), while the coldest was 1972 (-2°F) — a 53°F range across recorded history. Precipitation has occurred on 15% of recorded December 9th dates, with snow falling 15% of the time (heaviest snowfall: 14"). 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 9th in Fort Collins, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 64° | 38° | 51° | — | — |
| 2024 | 49° | 28° | 38° | — | — |
| 2023 | 42° | 28° | 35° | — | — |
| 2022 | 52° | 14° | 33° | — | — |
| 2021 | 49° | 39° | 44° | — | — |
| 2020 | 63° | 21° | 42° | — | — |
| 2019 | 44° | 26° | 35° | 0.03" | 0.4" |
| 2018 | 47° | 18° | 32° | — | — |
| 2017 | 59° | 32° | 46° | — | — |
| 2016 | 37° | 6° | 22° | — | — |
| 2015 | 63° | 32° | 47° | — | — |
| 2014 | 46° | 22° | 34° | — | — |
| 2013 | 19° | -5° | 7° | — | — |
| 2012 | 30° | 17° | 24° | — | — |
| 2011 | 34° | 18° | 26° | — | — |
| 2010 | 60° | 29° | 44° | — | — |
| 2009 | 16° | -15° | 1° | — | — |
| 2008 | 35° | 23° | 29° | 0.15" | 1.2" |
| 2007 | 24° | 11° | 17° | 0.1" | 1.3" |
| 2006 | 57° | 17° | 37° | — | — |
| 2005 | 39° | 9° | 24° | — | — |
| 2004 | 52° | 33° | 42° | — | — |
| 2003 | 37° | 13° | 25° | 0.18" | 1.5" |
| 2002 | 52° | 17° | 34° | — | — |
| 2001 | 52° | 18° | 35° | — | — |
| 2000 | 56° | 27° | 41° | — | — |
| 1999 | 40° | 10° | 25° | — | — |
| 1998 | 32° | 25° | 28° | 0.38" | 3" |
| 1997 | 40° | 31° | 35° | — | — |
| 1996 | 62° | 30° | 46° | — | — |
| 1995 | 28° | 4° | 16° | — | — |
| 1994 | 37° | 8° | 23° | — | — |
| 1993 | 55° | 29° | 42° | — | — |
| 1992 | 51° | 16° | 33° | — | — |
| 1991 | 52° | 18° | 35° | — | — |
| 1990 | 63° | 22° | 42° | — | — |
| 1989 | 58° | 33° | 45° | — | — |
| 1988 | 44° | 3° | 24° | — | — |
| 1987 | 47° | 21° | 34° | — | — |
| 1986 | 26° | 9° | 17° | 0.23" | 2.4" |
| 1985 | 29° | 13° | 21° | 2.54" | 14" |
| 1984warmest | 62° | 40° | 51° | — | — |
| 1983 | 44° | 24° | 34° | — | — |
| 1982 | 43° | 7° | 25° | — | — |
| 1981 | 53° | 20° | 36° | — | — |
| 1980 | 43° | 18° | 30° | — | — |
| 1979 | 52° | 21° | 36° | — | — |
| 1978 | 28° | -11° | 9° | — | — |
| 1977 | 13° | 0° | 6° | — | — |
| 1976 | 58° | 24° | 41° | — | — |
| 1975 | 64° | 27° | 45° | — | — |
| 1974 | 55° | 15° | 35° | — | — |
| 1973 | 38° | 24° | 31° | — | — |
| 1972coldest | 5° | -10° | -2° | 0.08" | 1.7" |
| 1971 | 49° | 0° | 24° | — | — |
55 years of data from FT COLLINS