Weather on December 31
Greeley, CO
55 Years of Data
About This Date
December 31st in Greeley, CO typically brings cold winter weather, with average highs around 39°F and lows near 14°F — a 25°F daily swing. Over 54 years of records, the warmest December 31st was in 2025 (47°F average), while the coldest was 2014 (0°F) — a 47°F range across recorded history. Precipitation has occurred on 20% of recorded December 31st dates, with snow falling 24% of the time (heaviest snowfall: 8"). The last decade has been 4.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.6°F cooler on this date compared to 20-30 years ago.
Planning for December 31st in Greeley, CO? Bundle up with warm layers and protect extremities from the cold. Check road conditions if traveling, as snow is possible.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 64° | 30° | 47° | — | — |
| 2024 | 38° | 16° | 27° | — | — |
| 2023 | 51° | 23° | 37° | — | — |
| 2022 | 42° | 17° | 30° | — | — |
| 2021 | 45° | 19° | 32° | 0.84" | 4.1" |
| 2020 | 39° | 14° | 27° | — | — |
| 2019 | 41° | 11° | 26° | — | — |
| 2018 | 26° | 9° | 17° | 0.03" | 0.4" |
| 2017 | 20° | 8° | 14° | — | 0.2" |
| 2016 | 53° | 20° | 36° | — | — |
| 2015 | 27° | 8° | 17° | — | — |
| 2014coldest | 17° | -17° | 0° | — | — |
| 2013 | 59° | 23° | 41° | — | — |
| 2012 | 30° | 15° | 23° | — | — |
| 2011 | 54° | 30° | 42° | — | — |
| 2010 | 12° | 2° | 7° | 0.64" | 2.6" |
| 2009 | 37° | 9° | 23° | — | — |
| 2008 | 37° | 17° | 27° | — | — |
| 2007 | 33° | 12° | 23° | — | — |
| 2005 | 60° | 20° | 40° | — | — |
| 2004 | 52° | 28° | 40° | — | — |
| 2003 | 41° | 21° | 31° | — | — |
| 2002 | 42° | 17° | 30° | — | — |
| 2001 | 35° | 13° | 24° | — | — |
| 2000 | 32° | 18° | 25° | 0.36" | 1.5" |
| 1999 | 50° | 19° | 35° | — | — |
| 1998 | 38° | 28° | 33° | — | — |
| 1997 | 55° | 21° | 38° | — | — |
| 1996 | 57° | 28° | 43° | — | — |
| 1995 | 42° | 27° | 34° | 0.03" | 0.2" |
| 1994 | 21° | 4° | 12° | 0.15" | 0.7" |
| 1993 | 49° | 23° | 36° | — | — |
| 1992 | 25° | 12° | 18° | — | — |
| 1991 | 37° | 18° | 27° | 0.3" | 2" |
| 1990 | 44° | 6° | 25° | — | — |
| 1989 | 45° | 17° | 31° | — | — |
| 1988 | 43° | 7° | 25° | — | — |
| 1987 | 14° | -6° | 4° | — | — |
| 1986 | 43° | 19° | 31° | — | — |
| 1985 | 29° | 10° | 19° | — | — |
| 1984 | 42° | 26° | 34° | 0.25" | 1.7" |
| 1983 | 45° | 21° | 33° | 0.48" | 1.3" |
| 1982 | 41° | 7° | 24° | — | — |
| 1981 | 37° | 21° | 29° | — | — |
| 1980 | 59° | 26° | 43° | — | — |
| 1979 | 36° | -4° | 16° | — | — |
| 1978 | 13° | -7° | 3° | 0.05" | 0.3" |
| 1977 | 42° | 16° | 29° | — | 0.3" |
| 1976 | 26° | 1° | 14° | — | — |
| 1975 | 45° | 15° | 30° | 1.55" | 8" |
| 1974 | 39° | 20° | 29° | — | — |
| 1973 | 16° | 5° | 10° | — | — |
| 1972 | 30° | 6° | 18° | — | — |
| 1971 | 48° | 8° | 28° | — | — |
Greeley, CO Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Greeley, CO Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Greeley, 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 Greeley, CO
Greeley, CO has no months that meet our "pleasant" threshold — every season has tradeoffs.