Weather on August 31
Green Bay, WI
55 Years of Data
Avg High
77°F
Avg Low
54°F
Warmest
1972
78°F avg
Coldest
2009
54°F avg
About This Date
August 31st in Green Bay, WI typically brings pleasant summer weather, with average highs around 77°F and lows near 54°F. Over 55 years of records, the warmest August 31st was in 1972 (78°F average), while the coldest was 2009 (54°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 18% of August 31st dates historically, with the wettest August 31st recording 1.98" of rain. The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
Planning for August 31st in Green Bay, WI? Great weather for outdoor activities.
Cooling Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 45° | 61° | — | — |
| 2024 | 82° | 55° | 69° | — | — |
| 2023 | 75° | 45° | 60° | — | — |
| 2022 | 85° | 60° | 72° | — | — |
| 2021 | 76° | 58° | 67° | — | — |
| 2020 | 73° | 51° | 62° | 0.18" | — |
| 2019 | 70° | 48° | 59° | — | — |
| 2018 | 80° | 52° | 66° | — | — |
| 2017 | 65° | 51° | 58° | — | — |
| 2016 | 77° | 54° | 65° | — | — |
| 2015 | 79° | 61° | 70° | — | — |
| 2014 | 76° | 61° | 68° | — | — |
| 2013 | 80° | 60° | 70° | — | — |
| 2012 | 83° | 57° | 70° | — | — |
| 2011 | 79° | 61° | 70° | 0.05" | — |
| 2010 | 84° | 71° | 78° | 0.13" | — |
| 2009coldest | 68° | 40° | 54° | — | — |
| 2008 | 89° | 53° | 71° | — | — |
| 2007 | 79° | 49° | 64° | — | — |
| 2006 | 74° | 46° | 60° | — | — |
| 2005 | 77° | 54° | 65° | — | — |
| 2004 | 75° | 50° | 63° | — | — |
| 2003 | 75° | 50° | 63° | — | — |
| 2002 | 81° | 53° | 67° | — | — |
| 2001 | 68° | 47° | 57° | — | — |
| 2000 | 90° | 65° | 77° | — | — |
| 1999 | 75° | 44° | 60° | — | — |
| 1998 | 79° | 46° | 62° | — | — |
| 1997 | 80° | 60° | 70° | — | — |
| 1996 | 81° | 55° | 68° | — | — |
| 1995 | 79° | 60° | 69° | — | — |
| 1994 | 63° | 47° | 55° | — | — |
| 1993 | 71° | 52° | 61° | 0.03" | — |
| 1992 | 69° | 47° | 58° | — | — |
| 1991 | 73° | 51° | 62° | — | — |
| 1990 | 77° | 53° | 65° | — | — |
| 1989 | 83° | 53° | 68° | 0.08" | — |
| 1988 | 82° | 54° | 68° | — | — |
| 1987 | 67° | 48° | 57° | — | — |
| 1986 | 78° | 55° | 67° | — | — |
| 1985 | 72° | 52° | 62° | — | — |
| 1984 | 74° | 48° | 61° | — | — |
| 1983 | 77° | 57° | 67° | — | — |
| 1982 | 64° | 52° | 58° | — | — |
| 1981 | 84° | 61° | 72° | 0.2" | — |
| 1980 | 70° | 60° | 65° | 1.98" | — |
| 1979 | 84° | 59° | 72° | — | — |
| 1978 | 75° | 50° | 63° | — | — |
| 1977 | 85° | 68° | 76° | 0.66" | — |
| 1976 | 82° | 52° | 67° | 1.42" | — |
| 1975 | 71° | 54° | 62° | — | — |
| 1974 | 67° | 48° | 57° | — | — |
| 1973 | 88° | 67° | 77° | — | — |
| 1972warmest | 87° | 69° | 78° | 1.42" | — |
| 1971 | 72° | 59° | 65° | — | — |
55 years of data from GREEN BAY