Weather on October 21
Milwaukee, WI
55 Years of Data
Avg High
60°F
Avg Low
42°F
Warmest
1979
73°F avg
Coldest
1976
37°F avg
About This Date
October 21st in Milwaukee, WI typically brings mild fall weather, with average highs around 60°F and lows near 42°F. Over 55 years of records, the warmest October 21st was in 1979 (73°F average), while the coldest was 1976 (37°F) — a 36°F range across recorded history. Rain or other precipitation has occurred on about 38% of October 21st dates historically, with the wettest October 21st recording 1.6" of rain. The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in Milwaukee, WI? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 67° | 39° | 53° | 0.18" | — |
| 2024 | 81° | 55° | 68° | — | — |
| 2023 | 61° | 42° | 51° | 0.53" | — |
| 2022 | 77° | 39° | 58° | — | — |
| 2021 | 63° | 43° | 53° | 0.1" | — |
| 2020 | 57° | 46° | 52° | 0.41" | — |
| 2019 | 65° | 48° | 56° | 0.33" | — |
| 2018 | 50° | 28° | 39° | — | — |
| 2017 | 76° | 61° | 68° | — | — |
| 2016 | 52° | 38° | 45° | — | — |
| 2015 | 73° | 56° | 64° | — | — |
| 2014 | 49° | 40° | 44° | — | — |
| 2013 | 50° | 34° | 42° | — | — |
| 2012 | 59° | 35° | 47° | — | — |
| 2011 | 55° | 38° | 46° | — | — |
| 2010 | 72° | 39° | 55° | 0.08" | — |
| 2009 | 52° | 50° | 51° | 0.08" | — |
| 2008 | 54° | 35° | 44° | 0.3" | — |
| 2007 | 71° | 47° | 59° | — | — |
| 2006 | 51° | 39° | 45° | 0.03" | — |
| 2005 | 59° | 37° | 48° | — | — |
| 2004 | 53° | 40° | 46° | — | — |
| 2003 | 83° | 53° | 68° | — | — |
| 2002 | 52° | 29° | 40° | 0.05" | — |
| 2001 | 67° | 42° | 54° | 0.25" | — |
| 2000 | 80° | 49° | 64° | — | — |
| 1999 | 51° | 36° | 43° | — | — |
| 1998 | 50° | 38° | 44° | 0.03" | — |
| 1997 | 47° | 35° | 41° | — | — |
| 1996 | 62° | 44° | 53° | — | — |
| 1995 | 43° | 36° | 39° | 0.2" | — |
| 1994 | 73° | 44° | 59° | — | — |
| 1993 | 54° | 41° | 47° | — | — |
| 1992 | 51° | 35° | 43° | — | — |
| 1991 | 67° | 43° | 55° | — | — |
| 1990 | 56° | 36° | 46° | 0.03" | — |
| 1989 | 52° | 36° | 44° | — | — |
| 1988 | 51° | 39° | 45° | 0.25" | — |
| 1987 | 42° | 35° | 39° | — | — |
| 1986 | 75° | 53° | 64° | — | — |
| 1985 | 55° | 50° | 53° | — | — |
| 1984 | 52° | 38° | 45° | 0.05" | — |
| 1983 | 53° | 50° | 52° | 0.79" | — |
| 1982 | 45° | 33° | 39° | — | — |
| 1981 | 49° | 41° | 45° | 0.3" | — |
| 1980 | 57° | 43° | 50° | — | — |
| 1979warmest | 81° | 66° | 73° | — | — |
| 1978 | 79° | 54° | 66° | — | — |
| 1977 | 71° | 48° | 60° | 0.08" | — |
| 1976coldest | 44° | 30° | 37° | — | — |
| 1975 | 72° | 50° | 61° | — | — |
| 1974 | 56° | 29° | 42° | — | — |
| 1973 | 68° | 44° | 56° | — | — |
| 1972 | 49° | 39° | 44° | 1.6" | — |
| 1971 | 72° | 61° | 66° | 0.3" | — |
55 years of data from W ALLIS