Weather on May 21
Milwaukee, WI
55 Years of Data
Avg High
70°F
Avg Low
50°F
Warmest
2021
78°F avg
Coldest
2002
42°F avg
About This Date
May 21st in Milwaukee, WI typically brings pleasant spring weather, with average highs around 70°F and lows near 50°F. Over 55 years of records, the warmest May 21st was in 2021 (78°F average), while the coldest was 2002 (42°F) — a 36°F range across recorded history. Rain or other precipitation has occurred on about 35% of May 21st dates historically, with the wettest May 21st recording 3.51" of rain. 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 May 21st in Milwaukee, WI? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 45° | 41° | 43° | 3.51" | — |
| 2024 | 67° | 56° | 61° | 0.66" | — |
| 2023 | 74° | 51° | 62° | — | — |
| 2022 | 64° | 49° | 56° | — | — |
| 2021warmest | 86° | 69° | 78° | 0.03" | — |
| 2020 | 68° | 49° | 58° | — | — |
| 2019 | 54° | 44° | 49° | 0.05" | — |
| 2018 | 54° | 45° | 49° | 1.35" | — |
| 2017 | 63° | 50° | 56° | 0.03" | — |
| 2016 | 71° | 52° | 61° | — | — |
| 2015 | 72° | 44° | 58° | — | — |
| 2014 | 86° | 50° | 68° | — | — |
| 2013 | 81° | 63° | 72° | — | — |
| 2012 | 63° | 51° | 57° | — | — |
| 2011 | 64° | 48° | 56° | 0.84" | — |
| 2010 | 80° | 54° | 67° | 0.66" | — |
| 2009 | 87° | 62° | 75° | — | — |
| 2008 | 66° | 39° | 53° | 0.03" | — |
| 2007 | 55° | 41° | 48° | — | — |
| 2006 | 76° | 40° | 58° | 0.15" | — |
| 2005 | 70° | 42° | 56° | — | — |
| 2004 | 88° | 49° | 68° | 0.28" | — |
| 2003 | 68° | 42° | 55° | — | — |
| 2002coldest | 54° | 30° | 42° | — | — |
| 2001 | 80° | 55° | 68° | 0.15" | — |
| 2000 | 61° | 43° | 52° | — | — |
| 1999 | 78° | 58° | 68° | — | — |
| 1998 | 60° | 48° | 54° | — | — |
| 1997 | 51° | 38° | 44° | — | — |
| 1996 | 78° | 55° | 67° | 0.03" | — |
| 1995 | 72° | 51° | 61° | — | — |
| 1994 | 84° | 57° | 71° | — | — |
| 1993 | 67° | 46° | 56° | — | — |
| 1992 | 78° | 57° | 68° | — | — |
| 1991 | 78° | 52° | 65° | — | — |
| 1990 | 54° | 44° | 49° | — | — |
| 1989 | 79° | 53° | 66° | — | — |
| 1988 | 73° | 49° | 61° | — | — |
| 1987 | 87° | 53° | 70° | 0.41" | — |
| 1986 | 63° | 50° | 56° | — | — |
| 1985 | 62° | 47° | 54° | — | — |
| 1984 | 70° | 47° | 58° | — | — |
| 1983 | 67° | 54° | 60° | 0.3" | — |
| 1982 | 50° | 44° | 47° | 1.3" | — |
| 1981 | 84° | 56° | 70° | — | — |
| 1980 | 81° | 59° | 70° | — | — |
| 1979 | 55° | 44° | 50° | — | — |
| 1978 | 56° | 41° | 48° | — | — |
| 1977 | 88° | 65° | 76° | — | — |
| 1976 | 68° | 50° | 59° | — | — |
| 1975 | 81° | 65° | 73° | 0.15" | — |
| 1974 | 86° | 55° | 71° | 0.81" | — |
| 1973 | 74° | 46° | 60° | 0.25" | — |
| 1972 | 81° | 62° | 71° | — | — |
| 1971 | 60° | 44° | 52° | — | — |
55 years of data from W ALLIS