Weather on April 21
Ann Arbor, MI
55 Years of Data
Avg High
61°F
Avg Low
39°F
Warmest
1987
71°F avg
Coldest
2013
31°F avg
About This Date
April 21st in Ann Arbor, MI typically brings mild spring weather, with average highs around 61°F and lows near 39°F. Over 55 years of records, the warmest April 21st was in 1987 (71°F average), while the coldest was 2013 (31°F) — a 40°F range across recorded history. Precipitation has occurred on 55% of recorded April 21st dates, with snow falling 4% of the time. The last decade has been 2.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.9°F cooler on this date compared to 20-30 years ago.
Planning for April 21st in Ann Arbor, MI? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 71° | 45° | 58° | 0.2" | — |
| 2024 | 55° | 36° | 45° | — | — |
| 2023 | 62° | 44° | 53° | 0.46" | — |
| 2022 | 65° | 37° | 51° | 0.18" | — |
| 2021 | 42° | 27° | 35° | — | — |
| 2020 | 47° | 25° | 36° | 0.05" | — |
| 2019 | 68° | 40° | 54° | 0.03" | — |
| 2018 | 57° | 27° | 42° | — | — |
| 2017 | 54° | 43° | 48° | — | — |
| 2016 | 62° | 49° | 55° | 1.19" | — |
| 2015 | 53° | 36° | 44° | 0.08" | — |
| 2014 | 79° | 35° | 57° | 0.03" | — |
| 2013coldest | 42° | 20° | 31° | — | — |
| 2012 | 74° | 36° | 55° | 0.89" | — |
| 2011 | 45° | 32° | 38° | 0.05" | — |
| 2010 | 64° | 36° | 50° | — | — |
| 2009 | 55° | 38° | 46° | 1.27" | — |
| 2008 | 72° | 38° | 55° | 0.03" | — |
| 2007 | 73° | 33° | 53° | — | — |
| 2006 | 75° | 45° | 60° | 0.2" | — |
| 2005 | 57° | 31° | 44° | — | — |
| 2004 | 71° | 48° | 60° | 0.2" | — |
| 2003 | 56° | 43° | 49° | 0.05" | — |
| 2002 | 42° | 34° | 38° | 0.3" | — |
| 2001 | 72° | 54° | 63° | 1.19" | — |
| 2000 | 51° | 41° | 46° | 0.28" | — |
| 1999 | 58° | 46° | 52° | 0.08" | — |
| 1998 | 65° | 44° | 54° | — | — |
| 1997 | 58° | 35° | 46° | — | — |
| 1996 | 63° | 46° | 54° | — | — |
| 1995 | 67° | 40° | 53° | 1.02" | — |
| 1994 | 57° | 30° | 44° | — | — |
| 1993 | 57° | 32° | 45° | 0.1" | 0.2" |
| 1992 | 74° | 60° | 67° | 1.8" | — |
| 1991 | 40° | 35° | 37° | 0.08" | — |
| 1990 | 66° | 46° | 56° | 2.49" | — |
| 1989 | 65° | 41° | 53° | 0.41" | — |
| 1988 | 49° | 29° | 39° | 0.15" | — |
| 1987warmest | 84° | 57° | 71° | — | — |
| 1986 | 47° | 38° | 42° | 0.76" | — |
| 1985 | 83° | 58° | 70° | — | — |
| 1984 | 57° | 38° | 47° | — | — |
| 1983 | 58° | 31° | 44° | — | — |
| 1982 | 55° | 30° | 43° | — | — |
| 1981 | 46° | 23° | 35° | — | — |
| 1980 | 69° | 36° | 52° | — | — |
| 1979 | 63° | 42° | 52° | 0.08" | — |
| 1978 | 49° | 32° | 40° | 0.15" | 0.2" |
| 1977 | 76° | 57° | 66° | — | — |
| 1976 | 69° | 46° | 58° | 0.28" | — |
| 1975 | 51° | 28° | 40° | — | — |
| 1974 | 73° | 46° | 60° | — | — |
| 1973 | 78° | 60° | 69° | — | — |
| 1972 | 55° | 34° | 44° | — | — |
| 1971 | 71° | 43° | 57° | — | — |
55 years of data from ANN ARBOR 1W