Weather on March 21
Aurora, CO
55 Years of Data
Avg High
58°F
Avg Low
29°F
Warmest
2026
71°F avg
Coldest
2006
17°F avg
About This Date
March 21st in Aurora, CO typically brings cool spring weather, with average highs around 58°F and lows near 29°F — a 29°F daily swing. Over 56 years of records, the warmest March 21st was in 2026 (71°F average), while the coldest was 2006 (17°F) — a 54°F range across recorded history. Precipitation has occurred on 21% of recorded March 21st dates, with snow falling 16% of the time (heaviest snowfall: 3.2"). The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
Planning for March 21st in Aurora, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 88° | 54° | 71° | — | — |
| 2025 | 57° | 28° | 43° | — | — |
| 2024 | 61° | 31° | 46° | — | — |
| 2023 | 56° | 28° | 42° | — | — |
| 2022 | 66° | 33° | 50° | — | — |
| 2021 | 51° | 31° | 41° | 0.51" | — |
| 2020 | 27° | 15° | 21° | — | — |
| 2019 | 57° | 27° | 42° | — | — |
| 2018 | 50° | 25° | 37° | — | — |
| 2017 | 76° | 38° | 57° | — | — |
| 2016 | 61° | 21° | 41° | — | — |
| 2015 | 64° | 32° | 48° | — | — |
| 2014 | 67° | 27° | 47° | — | — |
| 2013 | 52° | 19° | 35° | — | — |
| 2012 | 50° | 25° | 37° | — | — |
| 2011 | 68° | 33° | 51° | — | — |
| 2010 | 36° | 14° | 25° | — | — |
| 2009 | 67° | 35° | 51° | — | — |
| 2008 | 69° | 30° | 50° | — | — |
| 2007 | 74° | 38° | 56° | — | — |
| 2006coldest | 21° | 12° | 17° | 0.58" | 3.2" |
| 2005 | 59° | 32° | 46° | 0.76" | 0.1" |
| 2004 | 60° | 29° | 44° | — | — |
| 2003 | 37° | 26° | 32° | 0.05" | 0.2" |
| 2002 | 65° | 13° | 39° | — | — |
| 2001 | 68° | 37° | 53° | — | — |
| 2000 | 31° | 26° | 28° | 0.41" | 1.8" |
| 1999 | 76° | 33° | 54° | — | — |
| 1998 | 56° | 26° | 41° | — | — |
| 1997 | 61° | 36° | 48° | — | — |
| 1996 | 54° | 35° | 44° | — | — |
| 1995 | 78° | 38° | 58° | — | — |
| 1994 | 69° | 32° | 51° | — | — |
| 1993 | 57° | 34° | 45° | — | — |
| 1992 | 37° | 26° | 32° | 0.36" | 1.5" |
| 1991 | 57° | 28° | 43° | 0.03" | — |
| 1990 | 69° | 38° | 53° | — | — |
| 1989 | 62° | 18° | 40° | — | — |
| 1988 | 74° | 43° | 58° | — | — |
| 1987 | 50° | 27° | 38° | 0.1" | 0.4" |
| 1986 | 67° | 33° | 50° | — | — |
| 1985 | 63° | 33° | 48° | — | — |
| 1984 | 62° | 27° | 44° | — | — |
| 1983 | 37° | 13° | 25° | — | — |
| 1982 | 45° | 18° | 31° | — | — |
| 1981 | 38° | 31° | 34° | 0.71" | 2.8" |
| 1980 | 65° | 27° | 46° | — | — |
| 1979 | 40° | 33° | 36° | 0.08" | 0.1" |
| 1978 | 72° | 36° | 54° | — | — |
| 1977 | 51° | 18° | 34° | — | — |
| 1976 | 50° | 30° | 40° | — | — |
| 1975 | 54° | 35° | 44° | 0.23" | — |
| 1974 | 51° | 14° | 33° | — | — |
| 1973 | 66° | 35° | 51° | 0.18" | 0.8" |
| 1972 | 70° | 28° | 49° | — | — |
| 1971 | 64° | 29° | 46° | — | — |
56 years of data from DENVER-STAPLETON