Weather on March 21
Milwaukee, WI
55 Years of Data
Avg High
45°F
Avg Low
29°F
Warmest
2012
70°F avg
Coldest
2002
21°F avg
About This Date
March 21st in Milwaukee, WI typically brings chilly spring weather, with average highs around 45°F and lows near 29°F. Over 56 years of records, the warmest March 21st was in 2012 (70°F average), while the coldest was 2002 (21°F) — a 49°F range across recorded history. Precipitation has occurred on 32% of recorded March 21st dates, with snow falling 13% of the time (heaviest snowfall: 6.2"). The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for March 21st in Milwaukee, WI? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 63° | 34° | 48° | — | — |
| 2025 | 42° | 27° | 34° | — | — |
| 2024 | 38° | 23° | 30° | — | — |
| 2023 | 49° | 34° | 41° | — | — |
| 2022 | 62° | 35° | 49° | — | — |
| 2021 | 64° | 33° | 49° | — | — |
| 2020 | 32° | 24° | 28° | — | — |
| 2019 | 49° | 36° | 42° | 0.03" | — |
| 2018 | 37° | 28° | 33° | — | — |
| 2017 | 49° | 29° | 39° | — | — |
| 2016 | 47° | 29° | 38° | — | — |
| 2015 | 44° | 28° | 36° | — | — |
| 2014 | 41° | 26° | 34° | — | — |
| 2013 | 30° | 13° | 21° | — | — |
| 2012warmest | 84° | 56° | 70° | — | — |
| 2011 | 53° | 39° | 46° | — | — |
| 2010 | 33° | 28° | 31° | 0.08" | 0.3" |
| 2009 | 39° | 20° | 29° | 0.03" | 0.1" |
| 2008 | 47° | 29° | 38° | 1.4" | 5.5" |
| 2007 | 41° | 27° | 34° | 0.79" | — |
| 2006 | 36° | 25° | 30° | — | — |
| 2005 | 40° | 24° | 32° | — | — |
| 2004 | 61° | 26° | 43° | — | — |
| 2003 | 58° | 38° | 48° | 0.15" | — |
| 2002coldest | 24° | 18° | 21° | 0.2" | 1" |
| 2001 | 50° | 27° | 38° | — | — |
| 2000 | 46° | 38° | 42° | 0.46" | — |
| 1999 | 55° | 33° | 44° | — | — |
| 1998 | 39° | 30° | 35° | — | — |
| 1997 | 65° | 34° | 49° | — | — |
| 1996 | 37° | 19° | 28° | — | — |
| 1995 | 50° | 37° | 44° | — | — |
| 1994 | 56° | 38° | 47° | 1.68" | — |
| 1993 | 42° | 27° | 34° | 0.03" | 0.1" |
| 1992 | 31° | 27° | 29° | 0.91" | 6.2" |
| 1991 | 71° | 40° | 55° | — | — |
| 1990 | 49° | 34° | 41° | 0.1" | — |
| 1989 | 28° | 15° | 22° | — | — |
| 1988 | 31° | 22° | 26° | — | — |
| 1987 | 49° | 34° | 41° | — | — |
| 1986 | 39° | 15° | 27° | — | — |
| 1985 | 43° | 31° | 37° | — | — |
| 1984 | 36° | 31° | 33° | 1.27" | 2" |
| 1983 | 29° | 20° | 24° | 0.2" | — |
| 1982 | 39° | 33° | 36° | 0.05" | — |
| 1981 | 37° | 32° | 35° | — | — |
| 1980 | 41° | 30° | 36° | — | — |
| 1979 | 47° | 34° | 40° | — | — |
| 1978 | 42° | 35° | 39° | — | — |
| 1977 | 35° | 28° | 32° | 0.1" | — |
| 1976 | 48° | 25° | 36° | — | — |
| 1975 | 46° | 33° | 40° | 1.52" | — |
| 1974 | 36° | 18° | 27° | — | — |
| 1973 | 43° | 24° | 33° | — | — |
| 1972 | 59° | 38° | 48° | 0.64" | — |
| 1971 | 44° | 22° | 33° | — | — |
56 years of data from W ALLIS