Weather on March 21
Detroit, MI
55 Years of Data
Avg High
46°F
Avg Low
30°F
Warmest
2012
69°F avg
Coldest
1988
23°F avg
About This Date
March 21st in Detroit, MI typically brings chilly spring weather, with average highs around 46°F and lows near 30°F. Over 56 years of records, the warmest March 21st was in 2012 (69°F average), while the coldest was 1988 (23°F) — a 46°F range across recorded history. Precipitation has occurred on 13% of recorded March 21st dates, with snow falling 4% of the time. The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
Planning for March 21st in Detroit, MI? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 45° | 33° | 39° | — | — |
| 2025 | 55° | 29° | 42° | — | — |
| 2024 | 38° | 22° | 30° | — | — |
| 2023 | 57° | 38° | 47° | — | — |
| 2022 | 61° | 36° | 48° | — | — |
| 2021 | 64° | 27° | 46° | — | — |
| 2020 | 36° | 23° | 30° | — | — |
| 2019 | 43° | 38° | 40° | 0.03" | — |
| 2018 | 40° | 28° | 34° | — | — |
| 2017 | 57° | 28° | 43° | — | — |
| 2016 | 45° | 29° | 37° | — | — |
| 2015 | 51° | 30° | 41° | — | — |
| 2014 | 39° | 24° | 32° | — | — |
| 2013 | 32° | 17° | 25° | — | — |
| 2012warmest | 83° | 56° | 69° | — | — |
| 2011 | 54° | 38° | 46° | 0.48" | — |
| 2010 | 47° | 31° | 39° | — | — |
| 2009 | 45° | 28° | 36° | — | — |
| 2008 | 31° | 24° | 27° | 0.53" | — |
| 2007 | 61° | 28° | 44° | 0.18" | — |
| 2006 | 34° | 23° | 28° | — | — |
| 2005 | 41° | 33° | 37° | — | — |
| 2004 | 37° | 23° | 30° | — | — |
| 2003 | 54° | 37° | 45° | 0.18" | — |
| 2002 | 40° | 18° | 29° | — | — |
| 2001 | 53° | 31° | 42° | — | — |
| 2000 | 48° | 41° | 45° | — | — |
| 1999 | 44° | 33° | 39° | — | — |
| 1998 | 34° | 32° | 33° | — | — |
| 1997 | 72° | 40° | 56° | — | — |
| 1996 | 29° | 24° | 26° | — | — |
| 1995 | 49° | 41° | 45° | — | — |
| 1994 | 50° | 32° | 41° | — | — |
| 1993 | 40° | 34° | 37° | — | — |
| 1992 | 34° | 22° | 28° | — | — |
| 1991 | 73° | 40° | 56° | — | — |
| 1990 | 48° | 28° | 38° | — | — |
| 1989 | 33° | 18° | 25° | — | — |
| 1988coldest | 29° | 17° | 23° | — | — |
| 1987 | 51° | 29° | 40° | — | — |
| 1986 | 34° | 14° | 24° | — | — |
| 1985 | 39° | 23° | 31° | — | — |
| 1984 | 40° | 34° | 37° | — | — |
| 1983 | 29° | 20° | 24° | — | — |
| 1982 | 44° | 38° | 41° | — | — |
| 1981 | 39° | 28° | 34° | — | — |
| 1980 | 43° | 30° | 36° | — | — |
| 1979 | 58° | 38° | 48° | — | — |
| 1978 | 49° | 37° | 43° | — | — |
| 1977 | 45° | 33° | 39° | — | — |
| 1976 | 61° | 24° | 42° | — | — |
| 1975 | 40° | 31° | 35° | — | — |
| 1974 | 37° | 29° | 33° | — | 1" |
| 1973 | 35° | 24° | 30° | — | — |
| 1972 | 60° | 38° | 49° | 0.1" | — |
| 1971 | 39° | 27° | 33° | 0.05" | 0.2" |
56 years of data from DETROIT CITY AP