Weather on August 20
Green Bay, WI
55 Years of Data
Avg High
78°F
Avg Low
56°F
Warmest
1980
78°F avg
Coldest
2000
57°F avg
About This Date
August 20th in Green Bay, WI typically brings pleasant summer weather, with average highs around 78°F and lows near 56°F. Over 55 years of records, the warmest August 20th was in 1980 (78°F average), while the coldest was 2000 (57°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 18% of August 20th dates historically, with the wettest August 20th recording 7.57" of rain. The last decade has been 3.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.9°F warmer on this date compared to 20-30 years ago.
Planning for August 20th in Green Bay, WI? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 72° | 62° | 67° | — | — |
| 2024 | 72° | 50° | 61° | — | — |
| 2023 | 87° | 62° | 75° | — | — |
| 2022 | 79° | 64° | 71° | 0.15" | — |
| 2021 | 86° | 62° | 74° | — | — |
| 2020 | 86° | 67° | 76° | — | — |
| 2019 | 83° | 55° | 69° | — | — |
| 2018 | 78° | 60° | 69° | — | — |
| 2017 | 79° | 56° | 67° | — | — |
| 2016 | 77° | 59° | 68° | 1.52" | — |
| 2015 | 65° | 52° | 58° | 0.23" | — |
| 2014 | 75° | 60° | 68° | — | — |
| 2013 | 85° | 61° | 73° | — | — |
| 2012 | 75° | 49° | 62° | — | — |
| 2011 | 79° | 58° | 68° | — | — |
| 2010 | 85° | 63° | 74° | 7.57" | — |
| 2009 | 75° | 62° | 69° | 1.19" | — |
| 2008 | 81° | 54° | 67° | — | — |
| 2007 | 65° | 61° | 63° | 0.91" | — |
| 2006 | 79° | 50° | 64° | — | — |
| 2005 | 81° | 62° | 71° | 0.61" | — |
| 2004 | 70° | 46° | 58° | — | — |
| 2003 | 88° | 64° | 76° | — | — |
| 2002 | 77° | 47° | 62° | — | — |
| 2001 | 80° | 52° | 66° | — | — |
| 2000coldest | 72° | 43° | 57° | — | — |
| 1999 | 78° | 48° | 63° | — | — |
| 1998 | 86° | 61° | 73° | — | — |
| 1997 | 65° | 56° | 60° | 3.71" | — |
| 1996 | 80° | 64° | 72° | — | — |
| 1995 | 81° | 56° | 68° | — | — |
| 1994 | 70° | 58° | 64° | — | — |
| 1993 | 75° | 57° | 66° | — | — |
| 1992 | 79° | 49° | 64° | — | — |
| 1991 | 77° | 49° | 63° | — | — |
| 1990 | 64° | 59° | 62° | — | — |
| 1989 | 83° | 62° | 72° | — | — |
| 1988 | 79° | 50° | 64° | — | — |
| 1987 | 79° | 49° | 64° | — | — |
| 1986 | 79° | 50° | 64° | — | — |
| 1985 | 64° | 54° | 59° | — | — |
| 1984 | 79° | 51° | 65° | — | — |
| 1983 | 78° | 56° | 67° | — | — |
| 1982 | 79° | 60° | 69° | — | — |
| 1981 | 77° | 49° | 63° | — | — |
| 1980warmest | 86° | 69° | 78° | 1.65" | — |
| 1979 | 74° | 60° | 67° | — | — |
| 1978 | 77° | 47° | 62° | — | — |
| 1977 | 74° | 50° | 62° | — | — |
| 1976 | 86° | 62° | 74° | — | — |
| 1975 | 68° | 60° | 64° | 1.42" | — |
| 1974 | 85° | 61° | 73° | — | — |
| 1973 | 76° | 55° | 65° | — | — |
| 1972 | 83° | 61° | 72° | — | — |
| 1971 | 85° | 61° | 73° | — | — |
55 years of data from GREEN BAY