Weather on December 1
Fort Collins, CO
55 Years of Data
About This Date
December 1st in Fort Collins, CO typically brings chilly winter weather, with average highs around 46°F and lows near 20°F — a 26°F daily swing. Over 54 years of records, the warmest December 1st was in 2021 (52°F average), while the coldest was 1985 (1°F) — a 51°F range across recorded history. Precipitation has occurred on 6% of recorded December 1st dates, with snow falling 6% of the time (heaviest snowfall: 4.9"). The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
Planning for December 1st in Fort Collins, CO? Bring layers as temperatures can vary throughout the day.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 43° | 11° | 27° | — | — |
| 2024 | 51° | 21° | 36° | — | — |
| 2023 | 35° | 20° | 27° | — | — |
| 2022 | 54° | 11° | 32° | — | — |
| 2021warmest | 72° | 33° | 52° | — | — |
| 2020 | 43° | 28° | 35° | — | — |
| 2019 | 35° | 10° | 23° | — | — |
| 2018 | 46° | 25° | 35° | — | — |
| 2017 | 56° | 26° | 41° | — | — |
| 2016 | 42° | 15° | 29° | — | — |
| 2015 | 43° | 16° | 29° | — | — |
| 2014 | 37° | 19° | 28° | — | — |
| 2013 | 56° | 26° | 41° | — | — |
| 2012 | 60° | 31° | 45° | — | — |
| 2011 | 48° | 21° | 35° | 0.32" | 4.9" |
| 2010 | 56° | 22° | 39° | — | — |
| 2009 | 42° | 22° | 32° | — | — |
| 2008 | 48° | 24° | 36° | — | — |
| 2007 | 37° | 21° | 29° | — | — |
| 2006 | 34° | 13° | 23° | — | — |
| 2005 | 36° | 17° | 26° | — | — |
| 2004 | 34° | 12° | 23° | — | — |
| 2003 | 45° | 28° | 36° | — | — |
| 2002 | 55° | 27° | 41° | — | — |
| 2001 | 42° | 18° | 30° | — | — |
| 2000 | 44° | 20° | 32° | — | — |
| 1999 | 61° | 34° | 47° | — | — |
| 1998 | 66° | 31° | 48° | — | — |
| 1997 | 46° | 26° | 36° | — | — |
| 1996 | 50° | 18° | 34° | — | — |
| 1995 | 60° | 32° | 46° | — | — |
| 1994 | 64° | 24° | 44° | — | — |
| 1993 | 46° | 27° | 36° | — | — |
| 1992 | 48° | 26° | 37° | — | — |
| 1991 | 28° | 7° | 17° | — | — |
| 1990 | 47° | 26° | 36° | — | — |
| 1989 | 53° | 16° | 34° | — | — |
| 1988 | 58° | 19° | 38° | — | — |
| 1987 | 44° | 15° | 30° | — | — |
| 1986 | 40° | 25° | 32° | — | — |
| 1985coldest | 7° | -5° | 1° | — | — |
| 1984 | 39° | 22° | 30° | — | — |
| 1983 | 37° | 2° | 19° | — | — |
| 1981 | 43° | 15° | 29° | — | — |
| 1980 | 50° | 18° | 34° | 0.01" | 0.5" |
| 1979 | 39° | 8° | 24° | — | — |
| 1978 | 49° | 22° | 35° | — | — |
| 1977 | 37° | 24° | 31° | — | — |
| 1976 | 49° | 18° | 33° | — | — |
| 1975 | 60° | 19° | 40° | — | — |
| 1974 | 47° | 9° | 28° | — | — |
| 1973 | 56° | 23° | 39° | — | — |
| 1972 | 53° | 36° | 44° | — | — |
| 1971 | 30° | 24° | 27° | 0.05" | 1.5" |
Fort Collins, CO Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Fort Collins, CO Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Fort Collins, CO Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Fort Collins, CO
Most pleasant months in Fort Collins, CO: May, June, September.
What to expect on December 1st
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
December 1st outlook →