Weather on May 21
Denver, CO
55 Years of Data
Avg High
71°F
Avg Low
45°F
Warmest
2005
74°F avg
Coldest
2019
36°F avg
About This Date
May 21st in Denver, CO typically brings pleasant spring weather, with average highs around 71°F and lows near 45°F — a 26°F daily swing. Over 54 years of records, the warmest May 21st was in 2005 (74°F average), while the coldest was 2019 (36°F) — a 38°F range across recorded history. Precipitation has occurred on 35% of recorded May 21st dates, with snow falling 6% of the time (heaviest snowfall: 2.8"). The last decade has been 6.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 6.1°F cooler on this date compared to 20-30 years ago.
Planning for May 21st in Denver, CO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 43° | 58° | — | — |
| 2024 | 70° | 42° | 56° | 0.08" | — |
| 2023 | 70° | 47° | 58° | — | — |
| 2022 | 39° | 32° | 36° | 1.35" | 2.2" |
| 2021 | 78° | 53° | 66° | — | — |
| 2020 | 88° | 47° | 67° | — | — |
| 2019coldest | 41° | 31° | 36° | 2.34" | 2.8" |
| 2018 | 57° | 41° | 49° | 0.03" | — |
| 2017 | 62° | 32° | 47° | — | — |
| 2016 | 81° | 51° | 66° | — | — |
| 2015 | 44° | 35° | 40° | 0.05" | — |
| 2014 | 72° | 50° | 61° | 0.13" | — |
| 2013 | 63° | 43° | 53° | 0.43" | — |
| 2012 | 76° | 42° | 59° | — | — |
| 2011 | 61° | 40° | 50° | — | — |
| 2010 | 70° | 48° | 59° | — | — |
| 2008 | 83° | 53° | 68° | — | — |
| 2007 | 78° | 51° | 65° | — | — |
| 2006 | 85° | 52° | 68° | — | — |
| 2005warmest | 92° | 56° | 74° | — | — |
| 2004 | 80° | 49° | 64° | — | — |
| 2003 | 64° | 38° | 51° | — | — |
| 2002 | 61° | 46° | 53° | — | — |
| 2001 | 75° | 31° | 53° | 0.18" | 1" |
| 2000 | 68° | 45° | 56° | — | — |
| 1999 | 67° | 51° | 59° | 0.2" | — |
| 1998 | 83° | 51° | 67° | — | — |
| 1997 | 78° | 50° | 64° | 0.13" | — |
| 1996 | 76° | 43° | 59° | — | — |
| 1995 | 74° | 45° | 59° | — | — |
| 1994 | 78° | 46° | 62° | — | — |
| 1993 | 84° | 51° | 68° | 0.2" | — |
| 1992 | 78° | 52° | 65° | 0.38" | — |
| 1991 | 82° | 55° | 69° | — | — |
| 1990 | 81° | 45° | 63° | — | — |
| 1989 | 77° | 51° | 64° | — | — |
| 1988 | 61° | 44° | 52° | — | — |
| 1987 | 53° | 43° | 48° | 1.22" | — |
| 1986 | 87° | 53° | 70° | — | — |
| 1985 | 60° | 44° | 52° | 0.1" | — |
| 1984 | 72° | 52° | 62° | — | — |
| 1983 | 69° | 40° | 54° | 0.1" | — |
| 1982 | 68° | 40° | 54° | — | — |
| 1981 | 70° | 48° | 59° | — | — |
| 1980 | 78° | 52° | 65° | — | — |
| 1979 | 73° | 44° | 59° | — | — |
| 1978 | 67° | 46° | 56° | 0.03" | — |
| 1977 | 67° | 38° | 52° | — | — |
| 1976 | 68° | 51° | 60° | 1.42" | — |
| 1975 | 51° | 41° | 46° | 0.05" | — |
| 1974 | 71° | 39° | 55° | — | — |
| 1973 | 76° | 49° | 62° | 0.23" | — |
| 1972 | 83° | 45° | 64° | — | — |
| 1971 | 80° | 39° | 60° | — | — |
54 years of data from DENVER-STAPLETON