Weather on April 21
Denver, CO
55 Years of Data
Avg High
62°F
Avg Low
36°F
Warmest
1989
72°F avg
Coldest
2021
31°F avg
About This Date
April 21st in Denver, CO typically brings mild spring weather, with average highs around 62°F and lows near 36°F — a 26°F daily swing. Over 55 years of records, the warmest April 21st was in 1989 (72°F average), while the coldest was 2021 (31°F) — a 41°F range across recorded history. Precipitation has occurred on 31% of recorded April 21st dates, with snow falling 5% of the time (heaviest snowfall: 2.2"). Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for April 21st in Denver, CO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 62° | 33° | 48° | — | — |
| 2024 | 33° | 29° | 31° | 0.84" | — |
| 2023 | 51° | 28° | 40° | — | — |
| 2022 | 71° | 42° | 57° | — | — |
| 2021coldest | 35° | 27° | 31° | 0.28" | 1.3" |
| 2020 | 64° | 38° | 51° | — | — |
| 2019 | 81° | 49° | 65° | — | — |
| 2018 | 57° | 31° | 44° | 1.04" | 0.3" |
| 2017 | 63° | 41° | 52° | 0.25" | — |
| 2016 | 57° | 36° | 46° | — | — |
| 2015 | 54° | 33° | 43° | 0.03" | — |
| 2014 | 72° | 44° | 58° | — | — |
| 2013 | 57° | 33° | 45° | — | — |
| 2012 | 69° | 38° | 53° | — | — |
| 2011 | 50° | 31° | 40° | 0.13" | — |
| 2010 | 58° | 41° | 49° | — | — |
| 2009 | 69° | 37° | 53° | — | — |
| 2008 | 74° | 34° | 54° | — | — |
| 2007 | 73° | 35° | 54° | — | — |
| 2006 | 65° | 34° | 49° | — | — |
| 2005 | 51° | 36° | 43° | 1.35" | — |
| 2004 | 66° | 40° | 53° | — | — |
| 2003 | 58° | 36° | 47° | — | — |
| 2002 | 53° | 25° | 39° | 0.03" | — |
| 2001 | 63° | 34° | 48° | — | — |
| 2000 | 67° | 35° | 51° | — | — |
| 1999 | 72° | 41° | 56° | — | — |
| 1998 | 58° | 33° | 45° | — | — |
| 1997 | 60° | 36° | 48° | — | — |
| 1996 | 55° | 32° | 44° | — | — |
| 1995 | 42° | 32° | 37° | 0.36" | — |
| 1994 | 77° | 46° | 62° | — | — |
| 1993 | 69° | 31° | 50° | — | — |
| 1992 | 68° | 31° | 49° | — | — |
| 1991 | 51° | 39° | 45° | 0.1" | — |
| 1990 | 75° | 48° | 62° | — | — |
| 1989warmest | 89° | 55° | 72° | — | — |
| 1988 | 74° | 38° | 56° | 0.05" | — |
| 1987 | 58° | 30° | 44° | — | — |
| 1986 | 67° | 42° | 54° | 0.05" | — |
| 1985 | 56° | 37° | 46° | 0.3" | — |
| 1984 | 34° | 30° | 32° | 0.56" | 2.2" |
| 1983 | 52° | 42° | 47° | 0.48" | — |
| 1982 | 51° | 20° | 35° | — | — |
| 1981 | 73° | 41° | 57° | — | — |
| 1980 | 81° | 52° | 66° | — | — |
| 1979 | 72° | 40° | 56° | — | — |
| 1978 | 68° | 34° | 51° | — | — |
| 1977 | 61° | 34° | 47° | — | — |
| 1976 | 68° | 40° | 54° | — | — |
| 1975 | 66° | 35° | 51° | — | — |
| 1974 | 62° | 38° | 50° | — | — |
| 1973 | 55° | 29° | 42° | 0.03" | — |
| 1972 | 65° | 28° | 46° | — | — |
| 1971 | 64° | 33° | 49° | 0.89" | — |
55 years of data from DENVER-STAPLETON