Weather on October 20
Green Bay, WI
55 Years of Data
Avg High
57°F
Avg Low
37°F
Warmest
2024
67°F avg
Coldest
1976
33°F avg
About This Date
October 20th in Green Bay, WI typically brings cool fall weather, with average highs around 57°F and lows near 37°F. Over 55 years of records, the warmest October 20th was in 2024 (67°F average), while the coldest was 1976 (33°F) — a 34°F range across recorded history. Precipitation has occurred on 38% of recorded October 20th dates, with snow falling 5% of the time (heaviest snowfall: 1.2"). The last decade has been 4.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.8°F warmer on this date compared to 20-30 years ago.
Planning for October 20th in Green Bay, WI? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 64° | 33° | 49° | 0.23" | — |
| 2024warmest | 81° | 54° | 67° | — | — |
| 2023 | 61° | 37° | 49° | — | — |
| 2022 | 57° | 39° | 48° | — | — |
| 2021 | 63° | 47° | 55° | 0.61" | — |
| 2020 | 45° | 24° | 35° | 0.51" | — |
| 2019 | 64° | 46° | 55° | — | — |
| 2018 | 46° | 34° | 40° | — | — |
| 2017 | 74° | 46° | 60° | — | — |
| 2016 | 52° | 39° | 45° | — | — |
| 2015 | 60° | 46° | 53° | — | — |
| 2014 | 55° | 39° | 47° | 0.03" | — |
| 2013 | 48° | 31° | 40° | 0.1" | — |
| 2012 | 59° | 38° | 48° | — | — |
| 2011 | 45° | 35° | 40° | 0.1" | — |
| 2010 | 59° | 39° | 49° | 0.15" | — |
| 2009 | 54° | 40° | 47° | 0.03" | — |
| 2008 | 60° | 37° | 49° | — | — |
| 2007 | 68° | 48° | 58° | — | — |
| 2006 | 46° | 33° | 40° | — | — |
| 2005 | 56° | 31° | 43° | — | — |
| 2004 | 55° | 34° | 44° | — | — |
| 2003 | 79° | 43° | 61° | — | — |
| 2002 | 46° | 31° | 38° | 0.03" | 0.1" |
| 2001 | 60° | 36° | 48° | — | — |
| 2000 | 74° | 43° | 58° | — | — |
| 1999 | 49° | 28° | 38° | — | — |
| 1998 | 53° | 35° | 44° | — | — |
| 1997 | 48° | 30° | 39° | — | — |
| 1996 | 57° | 26° | 42° | — | — |
| 1995 | 49° | 37° | 43° | 1.32" | — |
| 1994 | 57° | 40° | 48° | — | — |
| 1993 | 52° | 37° | 44° | 0.94" | — |
| 1992 | 39° | 32° | 36° | 0.46" | 1.2" |
| 1991 | 52° | 39° | 45° | — | — |
| 1990 | 58° | 40° | 49° | 0.33" | — |
| 1989 | 39° | 33° | 36° | 0.91" | 0.6" |
| 1988 | 50° | 28° | 39° | 0.2" | — |
| 1987 | 53° | 27° | 40° | — | — |
| 1986 | 69° | 40° | 54° | 0.03" | — |
| 1985 | 58° | 39° | 48° | — | — |
| 1984 | 56° | 38° | 47° | — | — |
| 1983 | 51° | 37° | 44° | — | — |
| 1982 | 57° | 32° | 45° | 0.53" | — |
| 1981 | 58° | 40° | 49° | — | — |
| 1980 | 50° | 38° | 44° | 0.05" | — |
| 1979 | 73° | 58° | 65° | 0.08" | — |
| 1978 | 67° | 33° | 50° | — | — |
| 1977 | 65° | 34° | 49° | — | — |
| 1976coldest | 43° | 24° | 33° | — | — |
| 1975 | 63° | 34° | 48° | — | — |
| 1974 | 44° | 26° | 35° | — | — |
| 1973 | 59° | 36° | 47° | — | — |
| 1972 | 50° | 23° | 37° | 0.41" | — |
| 1971 | 63° | 55° | 59° | 1.17" | — |
55 years of data from GREEN BAY