Weather on April 21
Milwaukee, WI
55 Years of Data
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 56 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 41% 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.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 55° | 35° | 45° | — | — |
| 2025 | 55° | 41° | 48° | 0.49" | — |
| 2024 | 47° | 30° | 38° | — | — |
| 2023 | 61° | 41° | 51° | — | — |
| 2022 | 70° | 45° | 57° | — | — |
| 2021 | 41° | 32° | 37° | 0.1" | 0.8" |
| 2020 | 49° | 33° | 41° | — | — |
| 2019 | 74° | 45° | 59° | — | — |
| 2018 | 56° | 31° | 44° | — | — |
| 2017 | 54° | 41° | 47° | — | — |
| 2016 | 66° | 50° | 58° | 0.07" | — |
| 2015 | 44° | 37° | 41° | — | — |
| 2014 | 73° | 57° | 65° | 0.03" | — |
| 2013 | 45° | 31° | 38° | — | — |
| 2012 | 48° | 33° | 41° | — | — |
| 2011 | 47° | 33° | 40° | 0.03" | — |
| 2010 | 65° | 38° | 51° | — | — |
| 2009 | 45° | 34° | 39° | 0.22" | — |
| 2008 | 73° | 41° | 57° | — | — |
| 2007 | 70° | 36° | 53° | — | — |
| 2006 | 78° | 48° | 63° | — | — |
| 2005 | 63° | 36° | 49° | — | — |
| 2004 | 59° | 43° | 51° | 1.38" | — |
| 2003 | 66° | 46° | 56° | — | — |
| 2002 | 50° | 34° | 42° | 0.02" | — |
| 2001 | 68° | 47° | 57° | 0.74" | — |
| 2000 | 48° | 37° | 43° | 0.62" | — |
| 1999 | 58° | 38° | 48° | 0.07" | — |
| 1998 | 51° | 42° | 47° | 0.2" | — |
| 1997 | 46° | 36° | 41° | — | — |
| 1996 | 62° | 40° | 51° | — | — |
| 1995 | 46° | 40° | 43° | 0.11" | — |
| 1994 | 53° | 36° | 44° | — | — |
| 1993 | 54° | 31° | 42° | — | — |
| 1992 | 61° | 38° | 49° | 0.01" | — |
| 1991 | 50° | 40° | 45° | — | — |
| 1990 | 63° | 42° | 52° | — | — |
| 1989 | 50° | 40° | 45° | — | — |
| 1988 | 51° | 27° | 39° | — | — |
| 1987 | 70° | 39° | 54° | 0.48" | — |
| 1986 | 46° | 29° | 37° | 0.21" | — |
| 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° | 0.06" | — |
| 1978 | 48° | 33° | 41° | — | — |
| 1977 | 67° | 48° | 57° | 0.16" | — |
| 1976 | 70° | 45° | 57° | 0.37" | — |
| 1975coldest | 46° | 29° | 37° | 0.2" | — |
| 1974 | 70° | 55° | 62° | 0.21" | — |
| 1973 | 69° | 58° | 63° | 3.52" | — |
| 1972 | 45° | 39° | 42° | 1.29" | — |
| 1971 | 47° | 42° | 44° | — | — |
Milwaukee, WI Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Milwaukee, WI Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Milwaukee, WI Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Milwaukee, WI
Most pleasant months in Milwaukee, WI: May, June, August, September.
What to expect on April 21st
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
April 21st outlook →