Weather on May 21
Madison, WI
55 Years of Data
Avg High
72°F
Avg Low
47°F
Warmest
1975
75°F avg
Coldest
2002
42°F avg
About This Date
May 21st in Madison, WI typically brings pleasant spring weather, with average highs around 72°F and lows near 47°F — a 25°F daily swing. Over 55 years of records, the warmest May 21st was in 1975 (75°F average), while the coldest was 2002 (42°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 25% of May 21st dates historically, with the wettest May 21st recording 3.12" 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 Madison, WI? Great weather for outdoor activities.
Cooling Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 47° | 42° | 44° | 1.4" | — |
| 2024 | 68° | 53° | 61° | 1.78" | — |
| 2023 | 75° | 44° | 60° | — | — |
| 2022 | 64° | 46° | 55° | — | — |
| 2021 | 80° | 69° | 75° | — | — |
| 2020 | 72° | 52° | 62° | — | — |
| 2019 | 59° | 45° | 52° | 0.03" | — |
| 2018 | 58° | 47° | 52° | 0.2" | — |
| 2017 | 57° | 46° | 52° | 1.93" | — |
| 2016 | 72° | 42° | 57° | — | — |
| 2015 | 56° | 38° | 47° | — | — |
| 2014 | 85° | 56° | 70° | 0.18" | — |
| 2013 | 81° | 62° | 71° | — | — |
| 2012 | 82° | 48° | 65° | — | — |
| 2011 | 78° | 57° | 68° | — | — |
| 2010 | 78° | 52° | 65° | 0.76" | — |
| 2009 | 83° | 59° | 71° | — | — |
| 2008 | 65° | 35° | 50° | — | — |
| 2007 | 59° | 44° | 52° | — | — |
| 2006 | 75° | 42° | 59° | — | — |
| 2005 | 71° | 47° | 59° | 0.13" | — |
| 2004 | 85° | 53° | 69° | — | — |
| 2003 | 62° | 36° | 49° | — | — |
| 2002coldest | 54° | 31° | 42° | — | — |
| 2001 | 77° | 59° | 68° | 3.12" | — |
| 2000 | 67° | 42° | 54° | — | — |
| 1999 | 70° | 52° | 61° | — | — |
| 1998 | 72° | 42° | 57° | — | — |
| 1997 | 59° | 28° | 44° | — | — |
| 1996 | 68° | 49° | 58° | 1.14" | — |
| 1995 | 71° | 44° | 58° | — | — |
| 1994 | 84° | 45° | 64° | — | — |
| 1993 | 60° | 37° | 49° | — | — |
| 1992 | 88° | 48° | 68° | — | — |
| 1991 | 80° | 43° | 61° | — | — |
| 1990 | 50° | 43° | 46° | — | — |
| 1989 | 76° | 41° | 58° | — | — |
| 1988 | 84° | 45° | 64° | — | — |
| 1987 | 73° | 57° | 65° | 1.3" | — |
| 1986 | 64° | 35° | 50° | — | — |
| 1985 | 69° | 44° | 57° | — | — |
| 1984 | 80° | 51° | 66° | — | — |
| 1983 | 70° | 50° | 60° | 0.05" | — |
| 1982 | 67° | 43° | 55° | — | — |
| 1981 | 81° | 44° | 62° | — | — |
| 1980 | — | 41° | — | — | — |
| 1979 | 72° | 36° | 54° | — | — |
| 1978 | 74° | 44° | 59° | — | — |
| 1977 | 92° | 58° | 75° | 0.23" | — |
| 1976 | 84° | 43° | 63° | 0.05" | — |
| 1975warmest | 87° | 63° | 75° | — | — |
| 1974 | 75° | 56° | 65° | — | — |
| 1973 | 72° | 47° | 59° | — | — |
| 1972 | 88° | 54° | 71° | — | — |
| 1971 | 65° | 44° | 54° | — | — |
55 years of data from UW ARBORETUM - MADISON