Weather on January 1
Boulder, CO
55 Years of Data
About This Date
January 1st in Boulder, CO typically brings chilly winter weather, with average highs around 41°F and lows near 18°F. Over 56 years of records, the warmest January 1st was in 1997 (55°F average), while the coldest was 1974 (1°F) — a 54°F range across recorded history. Precipitation has occurred on 11% of recorded January 1st dates, with snow falling 11% of the time (heaviest snowfall: 7.5"). The last decade has been 8.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 8.3°F cooler on this date compared to 20-30 years ago.
Planning for January 1st in Boulder, CO? Bring layers as temperatures can vary throughout the day.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 57° | 37° | 47° | — | — |
| 2025 | 45° | 16° | 30° | — | — |
| 2024 | 55° | 25° | 40° | — | — |
| 2023 | 37° | 28° | 33° | — | — |
| 2022 | 14° | 3° | 9° | — | — |
| 2021 | 43° | 28° | 36° | — | — |
| 2020 | 52° | 28° | 40° | — | — |
| 2019 | 14° | 3° | 9° | — | — |
| 2018 | 30° | 12° | 21° | — | — |
| 2017 | 47° | 30° | 38° | — | — |
| 2016 | 39° | 3° | 21° | — | — |
| 2015 | 32° | 6° | 19° | — | — |
| 2014 | 48° | 27° | 37° | 0.03" | 0.1" |
| 2013 | 30° | 8° | 19° | — | — |
| 2012 | 35° | 19° | 27° | — | — |
| 2011 | 25° | 1° | 13° | — | — |
| 2010 | 41° | 19° | 30° | — | — |
| 2009 | 55° | 45° | 50° | — | — |
| 2008 | 30° | 12° | 21° | — | — |
| 2007 | 43° | 19° | 31° | — | — |
| 2006 | 57° | 40° | 48° | — | — |
| 2005 | 45° | 22° | 33° | — | — |
| 2004 | 54° | 30° | 42° | — | — |
| 2003 | 49° | 31° | 40° | — | — |
| 2002 | 26° | 19° | 23° | 0.23" | 1.4" |
| 2001 | 34° | 17° | 25° | — | — |
| 2000 | 54° | 29° | 41° | — | — |
| 1999 | 45° | 31° | 38° | — | — |
| 1998 | 66° | 39° | 53° | — | — |
| 1997warmest | 70° | 41° | 55° | — | — |
| 1996 | 34° | 23° | 28° | 0.56" | 3.5" |
| 1995 | 44° | -4° | 20° | 0.15" | 1.7" |
| 1994 | 50° | 25° | 37° | — | — |
| 1993 | 44° | 16° | 30° | — | — |
| 1992 | 42° | 23° | 33° | — | — |
| 1991 | 56° | 32° | 44° | — | — |
| 1990 | 43° | 5° | 24° | — | — |
| 1989 | 46° | 20° | 33° | — | — |
| 1988 | 27° | 2° | 14° | — | — |
| 1987 | 36° | 14° | 25° | — | — |
| 1986 | 59° | 23° | 41° | — | — |
| 1985 | 29° | 9° | 19° | 1.17" | 7.5" |
| 1984 | 44° | 12° | 28° | — | — |
| 1983 | 36° | 5° | 20° | — | — |
| 1982 | 45° | 17° | 31° | — | — |
| 1981 | 50° | 36° | 43° | — | — |
| 1980 | 51° | 29° | 40° | — | — |
| 1979 | 13° | -7° | 3° | — | — |
| 1978 | 23° | 3° | 13° | — | — |
| 1977 | 23° | 1° | 12° | — | — |
| 1976 | 26° | 4° | 15° | — | — |
| 1975 | 39° | 12° | 26° | — | — |
| 1974coldest | 9° | -8° | 1° | 0.03" | 0.2" |
| 1973 | 33° | 10° | 22° | — | — |
| 1972 | 45° | 20° | 32° | — | — |
| 1971 | 51° | 23° | 37° | — | — |
Boulder, CO Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Boulder, CO Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Boulder, 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 Boulder, CO
Boulder, CO has no months that meet our "pleasant" threshold — every season has tradeoffs.