Weather on January 23
Boulder, CO
55 Years of Data
Avg High
47°F
Avg Low
21°F
Warmest
1981
53°F avg
Coldest
2026
14°F avg
About This Date
January 23rd in Boulder, CO typically brings chilly winter weather, with average highs around 47°F and lows near 21°F — a 26°F daily swing. Over 56 years of records, the warmest January 23rd was in 1981 (53°F average), while the coldest was 2026 (14°F) — a 39°F range across recorded history. Precipitation has occurred on 11% of recorded January 23rd dates, with snow falling 14% of the time (heaviest snowfall: 5.2"). The last decade has been 1.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.5°F cooler on this date compared to 20-30 years ago.
Planning for January 23rd in Boulder, CO? Bring layers as temperatures can vary throughout the day.
Cooling Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026coldest | 21° | 7° | 14° | — | — |
| 2025 | 36° | 12° | 24° | — | — |
| 2024 | 50° | 30° | 40° | — | — |
| 2023 | 36° | 27° | 32° | — | — |
| 2022 | 52° | 25° | 39° | — | — |
| 2021 | 41° | 21° | 31° | — | — |
| 2020 | 43° | 28° | 36° | — | — |
| 2019 | 45° | 21° | 33° | — | — |
| 2018 | 44° | 19° | 32° | — | — |
| 2017 | 47° | 28° | 37° | — | — |
| 2016 | 62° | 29° | 45° | — | — |
| 2015 | 48° | 20° | 34° | — | — |
| 2014 | 37° | 8° | 23° | 0.48" | 5.2" |
| 2013 | 64° | 34° | 49° | — | — |
| 2012 | 49° | 21° | 35° | — | — |
| 2011 | 49° | 17° | 33° | — | — |
| 2010 | 46° | 26° | 36° | — | — |
| 2009 | 56° | 21° | 38° | 0.03" | 0.1" |
| 2008 | 36° | 18° | 27° | — | — |
| 2007 | 47° | 17° | 32° | — | — |
| 2006 | 49° | 16° | 32° | — | — |
| 2005 | 67° | 26° | 46° | — | — |
| 2004 | 58° | 32° | 45° | — | — |
| 2003 | 56° | 12° | 34° | — | 0.1" |
| 2002 | 45° | 12° | 28° | 0.38" | 4.4" |
| 2001 | 39° | 23° | 31° | — | — |
| 2000 | 42° | 29° | 35° | — | — |
| 1999 | 54° | 20° | 37° | — | — |
| 1998 | 44° | 22° | 33° | — | — |
| 1997 | 49° | 27° | 38° | — | — |
| 1996 | 35° | 0° | 18° | 0.1" | 0.6" |
| 1995 | 52° | 16° | 34° | — | — |
| 1994 | 61° | 31° | 46° | — | — |
| 1993 | 40° | 23° | 31° | — | — |
| 1992 | 48° | 26° | 37° | — | — |
| 1991 | 28° | 15° | 22° | 0.2" | 1.3" |
| 1990 | 51° | 14° | 33° | — | — |
| 1989 | 54° | 30° | 42° | — | — |
| 1988 | 51° | 28° | 40° | — | — |
| 1987 | 51° | 29° | 40° | — | — |
| 1986 | 64° | 25° | 44° | — | — |
| 1985 | 43° | 6° | 24° | — | — |
| 1984 | 46° | 14° | 30° | — | — |
| 1983 | 46° | 20° | 33° | — | — |
| 1982 | 43° | 11° | 27° | — | — |
| 1981warmest | 71° | 36° | 53° | — | — |
| 1980 | 52° | 25° | 38° | — | — |
| 1979 | 34° | 3° | 18° | — | — |
| 1978 | 31° | 23° | 27° | 0.2" | 3" |
| 1977 | 40° | 25° | 32° | — | 0.3" |
| 1976 | 55° | 37° | 46° | — | — |
| 1975 | 56° | 23° | 39° | — | — |
| 1974 | 39° | 13° | 26° | — | — |
| 1973 | 48° | 10° | 29° | — | — |
| 1972 | 61° | 32° | 46° | — | — |
| 1971 | 47° | 33° | 40° | — | — |
56 years of data from BOULDER MUNI AP