Weather on April 1
Boulder, CO
55 Years of Data
Avg High
59°F
Avg Low
33°F
Warmest
2012
66°F avg
Coldest
1975
21°F avg
About This Date
April 1st in Boulder, CO typically brings cool spring weather, with average highs around 59°F and lows near 33°F — a 26°F daily swing. Over 56 years of records, the warmest April 1st was in 2012 (66°F average), while the coldest was 1975 (21°F) — a 45°F range across recorded history. Precipitation has occurred on 23% of recorded April 1st dates, with snow falling 13% of the time (heaviest snowfall: 10.4"). The last decade has been 6.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 6.4°F cooler on this date compared to 20-30 years ago.
Planning for April 1st in Boulder, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 52° | 37° | 44° | — | — |
| 2025 | 54° | 34° | 44° | — | — |
| 2024 | 52° | 34° | 43° | — | — |
| 2023 | 64° | 36° | 50° | — | — |
| 2022 | 61° | 39° | 50° | — | — |
| 2021 | 70° | 28° | 49° | — | — |
| 2020 | 70° | 37° | 53° | — | — |
| 2019 | 59° | 30° | 45° | — | — |
| 2018 | 46° | 27° | 37° | — | — |
| 2017 | 41° | 31° | 36° | 0.81" | 0.1" |
| 2016 | 51° | 22° | 36° | — | — |
| 2015 | 74° | 52° | 63° | — | — |
| 2014 | 57° | 29° | 43° | — | — |
| 2013 | 64° | 29° | 46° | — | — |
| 2012warmest | 81° | 52° | 66° | — | — |
| 2011 | 71° | 52° | 61° | — | — |
| 2010 | 54° | 36° | 45° | — | — |
| 2009 | 44° | 27° | 35° | 0.64" | 3.9" |
| 2008 | 44° | 18° | 31° | — | — |
| 2007 | 66° | 37° | 52° | — | — |
| 2006 | 62° | 35° | 49° | — | — |
| 2005 | 63° | 24° | 43° | — | — |
| 2004 | 78° | 41° | 60° | — | — |
| 2003 | 75° | 48° | 62° | — | — |
| 2002 | 76° | 51° | 63° | — | — |
| 2001 | 70° | 35° | 52° | — | — |
| 2000 | 47° | 20° | 33° | 0.08" | 0.5" |
| 1999 | 64° | 33° | 49° | 0.2" | — |
| 1998 | 61° | 27° | 44° | — | — |
| 1997 | 63° | 35° | 49° | 0.05" | — |
| 1996 | 71° | 33° | 52° | — | — |
| 1995 | 63° | 31° | 47° | — | — |
| 1994 | 65° | 30° | 47° | — | — |
| 1993 | 54° | 27° | 40° | 0.08" | — |
| 1992 | 53° | 21° | 37° | — | — |
| 1991 | 70° | 37° | 53° | — | — |
| 1990 | 55° | 36° | 45° | — | — |
| 1989 | 61° | 39° | 50° | 0.05" | — |
| 1988 | 41° | 15° | 28° | — | — |
| 1987 | 60° | 30° | 45° | 0.18" | 0.7" |
| 1986 | 59° | 40° | 49° | — | — |
| 1985 | 63° | 27° | 45° | — | — |
| 1984 | 37° | 31° | 34° | 0.08" | — |
| 1983 | 55° | 30° | 43° | — | — |
| 1982 | 77° | 47° | 62° | — | — |
| 1981 | 70° | 43° | 56° | — | — |
| 1980 | 37° | 25° | 31° | 0.38" | 1.5" |
| 1979 | 36° | 26° | 31° | 1.07" | 2.2" |
| 1978 | 72° | 40° | 56° | 0.23" | — |
| 1977 | 50° | 28° | 39° | — | — |
| 1976 | 69° | 32° | 51° | — | — |
| 1975coldest | 31° | 11° | 21° | 1.4" | 10.4" |
| 1974 | 55° | 26° | 41° | — | — |
| 1973 | 52° | 29° | 40° | — | — |
| 1972 | 59° | 25° | 42° | — | — |
| 1971 | 46° | 26° | 36° | — | — |
56 years of data from BOULDER MUNI AP