Weather on May 21
Arvada, CO
55 Years of Data
Avg High
68°F
Avg Low
43°F
Warmest
1992
70°F avg
Coldest
2022
34°F avg
About This Date
May 21st in Arvada, CO typically brings mild spring weather, with average highs around 68°F and lows near 43°F — a 25°F daily swing. Over 55 years of records, the warmest May 21st was in 1992 (70°F average), while the coldest was 2022 (34°F) — a 36°F range across recorded history. Precipitation has occurred on 20% of recorded May 21st dates, with snow falling 5% of the time (heaviest snowfall: 5.8"). The last decade has been 3.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.5°F cooler on this date compared to 20-30 years ago.
Planning for May 21st in Arvada, CO? Great weather for outdoor activities.
Cooling Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 71° | 38° | 54° | — | — |
| 2024 | 68° | 44° | 56° | — | — |
| 2023 | 68° | 50° | 59° | 0.08" | — |
| 2022coldest | 40° | 29° | 34° | 2.79" | 5.8" |
| 2021 | 84° | 54° | 69° | — | — |
| 2020 | 87° | 42° | 65° | — | — |
| 2019 | 41° | 31° | 36° | 2.13" | 3" |
| 2018 | 55° | 43° | 49° | — | — |
| 2017 | 61° | 35° | 48° | — | — |
| 2016 | 78° | 46° | 62° | — | — |
| 2015 | 45° | 38° | 41° | 0.08" | — |
| 2014 | 77° | 50° | 64° | — | — |
| 2013 | 65° | 40° | 52° | — | — |
| 2012 | 74° | 44° | 59° | — | — |
| 2011 | 58° | 33° | 45° | — | — |
| 2010 | 63° | 41° | 52° | — | — |
| 2009 | 59° | 41° | 50° | — | — |
| 2008 | 72° | 49° | 60° | — | — |
| 2007 | 67° | 42° | 54° | — | — |
| 2006 | 74° | 48° | 61° | — | — |
| 2005 | 75° | 55° | 65° | — | — |
| 2004 | 70° | 43° | 56° | — | — |
| 2003 | 65° | 36° | 50° | — | — |
| 2002 | 62° | 49° | 55° | 0.05" | — |
| 2001 | 33° | — | — | 1.55" | 3" |
| 2000 | 67° | 26° | 46° | — | — |
| 1999 | 69° | 47° | 58° | — | — |
| 1998 | 82° | 50° | 66° | — | — |
| 1997 | 79° | 45° | 62° | — | — |
| 1996 | 71° | 33° | 52° | — | — |
| 1995 | 68° | 39° | 54° | — | — |
| 1994 | 82° | 41° | 62° | — | — |
| 1993 | 79° | 45° | 62° | — | — |
| 1992warmest | 85° | 55° | 70° | — | — |
| 1991 | 78° | 58° | 68° | — | — |
| 1990 | 73° | 40° | 56° | — | — |
| 1989 | 79° | 45° | 62° | — | — |
| 1988 | 49° | 37° | 43° | 0.41" | — |
| 1987 | 65° | 39° | 52° | 2.82" | — |
| 1986 | 81° | 52° | 66° | — | — |
| 1985 | 62° | 43° | 52° | — | — |
| 1984 | 86° | 52° | 69° | — | — |
| 1983 | 54° | 34° | 44° | — | — |
| 1982 | 66° | 38° | 52° | — | — |
| 1981 | 74° | 47° | 60° | — | — |
| 1980 | 73° | 50° | 62° | — | — |
| 1979 | 72° | 47° | 59° | — | — |
| 1978 | 67° | 44° | 55° | 0.05" | — |
| 1977 | 66° | 36° | 51° | — | — |
| 1976 | 64° | 51° | 58° | 0.56" | — |
| 1975 | 47° | 40° | 43° | 0.2" | — |
| 1974 | 71° | 29° | 50° | — | — |
| 1973 | 78° | 50° | 64° | — | — |
| 1972 | 84° | 50° | 67° | — | — |
| 1971 | 76° | 45° | 60° | — | — |
55 years of data from WATERTON NORTH COLORADO