Weather on December 11
Fort Collins, CO
55 Years of Data
Avg High
46°F
Avg Low
19°F
Warmest
2025
55°F avg
Coldest
1985
4°F avg
About This Date
December 11th in Fort Collins, CO typically brings chilly winter weather, with average highs around 46°F and lows near 19°F — a 27°F daily swing. Over 55 years of records, the warmest December 11th was in 2025 (55°F average), while the coldest was 1985 (4°F) — a 51°F range across recorded history. Precipitation has occurred on 13% of recorded December 11th dates, with snow falling 13% of the time (heaviest snowfall: 5.2"). The last decade has been 5.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.5°F warmer on this date compared to 20-30 years ago.
Planning for December 11th in Fort Collins, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 69° | 41° | 55° | — | — |
| 2024 | 46° | 18° | 32° | — | — |
| 2023 | 49° | 27° | 38° | — | — |
| 2022 | 57° | 22° | 39° | — | — |
| 2021 | 43° | 14° | 28° | — | — |
| 2020 | 32° | 18° | 25° | 0.48" | 2.4" |
| 2019 | 42° | 16° | 29° | — | — |
| 2018 | 58° | 25° | 41° | — | — |
| 2017 | 60° | 23° | 42° | — | — |
| 2016 | 41° | 28° | 35° | 0.08" | 0.5" |
| 2015 | 58° | 38° | 48° | — | — |
| 2014 | 61° | 21° | 41° | — | — |
| 2013 | 36° | 11° | 23° | — | — |
| 2012 | 41° | 17° | 29° | — | — |
| 2011 | 47° | 11° | 29° | — | — |
| 2010 | 43° | 25° | 34° | — | — |
| 2009 | 31° | -2° | 14° | — | — |
| 2008 | 54° | 22° | 38° | — | — |
| 2007 | 32° | 19° | 26° | 0.41" | 5.2" |
| 2006 | 47° | 29° | 38° | — | — |
| 2005 | 49° | 14° | 31° | — | — |
| 2004 | 68° | 32° | 50° | — | — |
| 2003 | 34° | 9° | 21° | — | — |
| 2002 | 49° | 22° | 35° | — | — |
| 2001 | 47° | 15° | 31° | — | — |
| 2000 | 18° | 0° | 9° | 0.08" | 0.6" |
| 1999 | 40° | 25° | 32° | — | — |
| 1998 | 47° | 10° | 28° | — | — |
| 1997 | 39° | 22° | 30° | — | — |
| 1996 | 56° | 28° | 42° | — | — |
| 1995 | 62° | 35° | 49° | — | — |
| 1994 | 39° | 17° | 28° | — | — |
| 1993 | 54° | 23° | 38° | — | — |
| 1992 | 49° | 20° | 34° | — | — |
| 1991 | 39° | 24° | 32° | — | — |
| 1990 | 66° | 23° | 45° | — | — |
| 1989 | 22° | 6° | 14° | 0.05" | 0.9" |
| 1988 | 43° | 17° | 30° | — | — |
| 1987 | 56° | 24° | 40° | — | — |
| 1986 | 40° | 12° | 26° | — | — |
| 1985coldest | 13° | -5° | 4° | 0.08" | 1" |
| 1984 | 59° | 33° | 46° | — | — |
| 1983 | 49° | 32° | 40° | — | — |
| 1982 | 35° | 23° | 29° | — | — |
| 1981 | 61° | 32° | 46° | — | — |
| 1980 | 64° | 26° | 45° | — | — |
| 1979 | 41° | 10° | 26° | 0.25" | 2.4" |
| 1978 | 38° | 2° | 20° | — | — |
| 1977 | 60° | 25° | 42° | — | — |
| 1976 | 50° | 11° | 30° | — | — |
| 1975 | 44° | 28° | 36° | — | — |
| 1974 | 41° | 12° | 27° | — | — |
| 1973 | 52° | 28° | 40° | — | — |
| 1972 | 30° | -14° | 8° | — | — |
| 1971 | 39° | 11° | 25° | — | — |
55 years of data from FT COLLINS