Weather on April 21
Milwaukee, WI
55 Years of Data
Avg High
58°F
Avg Low
40°F
Warmest
1985
75°F avg
Coldest
1975
37°F avg
About This Date
April 21st in Milwaukee, WI typically brings cool spring weather, with average highs around 58°F and lows near 40°F. Over 55 years of records, the warmest April 21st was in 1985 (75°F average), while the coldest was 1975 (37°F) — a 38°F range across recorded history. Precipitation has occurred on 42% of recorded April 21st dates, with snow falling 2% of the time. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for April 21st in Milwaukee, WI? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Cooling Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 55° | 41° | 48° | 1.24" | — |
| 2024 | 47° | 30° | 38° | — | — |
| 2023 | 61° | 41° | 51° | — | — |
| 2022 | 70° | 45° | 57° | — | — |
| 2021 | 41° | 32° | 37° | 0.25" | 0.8" |
| 2020 | 49° | 33° | 41° | — | — |
| 2019 | 74° | 45° | 59° | — | — |
| 2018 | 56° | 31° | 44° | — | — |
| 2017 | 54° | 41° | 47° | — | — |
| 2016 | 66° | 50° | 58° | 0.18" | — |
| 2015 | 44° | 37° | 41° | — | — |
| 2014 | 73° | 57° | 65° | 0.08" | — |
| 2013 | 45° | 31° | 38° | — | — |
| 2012 | 48° | 33° | 41° | — | — |
| 2011 | 47° | 33° | 40° | 0.08" | — |
| 2010 | 65° | 38° | 51° | — | — |
| 2009 | 45° | 34° | 39° | 0.56" | — |
| 2008 | 73° | 41° | 57° | — | — |
| 2007 | 70° | 36° | 53° | — | — |
| 2006 | 78° | 48° | 63° | — | — |
| 2005 | 63° | 36° | 49° | — | — |
| 2004 | 59° | 43° | 51° | 3.51" | — |
| 2003 | 66° | 46° | 56° | — | — |
| 2002 | 50° | 34° | 42° | 0.05" | — |
| 2001 | 68° | 47° | 57° | 1.88" | — |
| 2000 | 48° | 37° | 43° | 1.57" | — |
| 1999 | 58° | 38° | 48° | 0.18" | — |
| 1998 | 51° | 42° | 47° | 0.51" | — |
| 1997 | 46° | 36° | 41° | — | — |
| 1996 | 62° | 40° | 51° | — | — |
| 1995 | 46° | 40° | 43° | 0.28" | — |
| 1994 | 53° | 36° | 44° | — | — |
| 1993 | 54° | 31° | 42° | — | — |
| 1992 | 61° | 38° | 49° | 0.03" | — |
| 1991 | 50° | 40° | 45° | — | — |
| 1990 | 63° | 42° | 52° | — | — |
| 1989 | 50° | 40° | 45° | — | — |
| 1988 | 51° | 27° | 39° | — | — |
| 1987 | 70° | 39° | 54° | 1.22" | — |
| 1986 | 46° | 29° | 37° | 0.53" | — |
| 1985warmest | 85° | 66° | 75° | — | — |
| 1984 | 46° | 39° | 43° | — | — |
| 1983 | 63° | 38° | 50° | — | — |
| 1982 | 55° | 30° | 43° | — | — |
| 1981 | 51° | 34° | 42° | — | — |
| 1980 | 83° | 51° | 67° | — | — |
| 1979 | 57° | 41° | 49° | 0.15" | — |
| 1978 | 48° | 33° | 41° | — | — |
| 1977 | 67° | 48° | 57° | 0.41" | — |
| 1976 | 70° | 45° | 57° | 0.94" | — |
| 1975coldest | 46° | 29° | 37° | 0.51" | — |
| 1974 | 70° | 55° | 62° | 0.53" | — |
| 1973 | 69° | 58° | 63° | 8.94" | — |
| 1972 | 45° | 39° | 42° | 3.28" | — |
| 1971 | 47° | 42° | 44° | — | — |
55 years of data from W ALLIS