Weather on May 20
Green Bay, WI
55 Years of Data
Avg High
71°F
Avg Low
47°F
Warmest
1977
75°F avg
Coldest
2002
41°F avg
About This Date
May 20th in Green Bay, WI typically brings pleasant spring weather, with average highs around 71°F and lows near 47°F. Over 55 years of records, the warmest May 20th was in 1977 (75°F average), while the coldest was 2002 (41°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 29% of May 20th dates historically, with the wettest May 20th recording 1.17" of rain. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for May 20th in Green Bay, WI? Great weather for outdoor activities.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 50° | 45° | 47° | 1.14" | — |
| 2024 | 67° | 54° | 60° | 0.61" | — |
| 2023 | 77° | 45° | 61° | — | — |
| 2022 | 70° | 59° | 64° | 0.15" | — |
| 2021 | 81° | 65° | 73° | 0.03" | — |
| 2020 | 71° | 50° | 61° | — | — |
| 2019 | 61° | 42° | 51° | — | — |
| 2018 | 63° | 42° | 52° | 0.03" | — |
| 2017 | 56° | 43° | 49° | 0.71" | — |
| 2016 | 76° | 44° | 60° | — | — |
| 2015 | 59° | 33° | 46° | — | — |
| 2014 | 71° | 50° | 61° | 0.25" | — |
| 2013 | 82° | 61° | 71° | 0.08" | — |
| 2012 | 90° | 56° | 73° | — | — |
| 2011 | 75° | 51° | 63° | — | — |
| 2010 | 81° | 48° | 64° | — | — |
| 2009 | 86° | 47° | 66° | — | — |
| 2008 | 69° | 41° | 55° | — | — |
| 2007 | 52° | 38° | 45° | — | — |
| 2006 | 72° | 39° | 55° | 0.1" | — |
| 2005 | 68° | 46° | 57° | — | — |
| 2004 | 82° | 54° | 68° | 1.12" | — |
| 2003 | 64° | 41° | 53° | — | — |
| 2002coldest | 51° | 30° | 41° | — | — |
| 2001 | 78° | 53° | 66° | — | — |
| 2000 | 64° | 33° | 49° | — | — |
| 1999 | 70° | 52° | 61° | — | — |
| 1998 | 75° | 48° | 62° | — | — |
| 1997 | 57° | 35° | 46° | — | — |
| 1996 | 71° | 56° | 63° | 0.03" | — |
| 1995 | 69° | 49° | 59° | — | — |
| 1994 | 85° | 47° | 66° | — | — |
| 1993 | 61° | 36° | 48° | — | — |
| 1992 | 84° | 46° | 65° | — | — |
| 1991 | 75° | 41° | 58° | — | — |
| 1990 | 55° | 44° | 50° | 0.18" | — |
| 1989 | 74° | 58° | 66° | 0.46" | — |
| 1988 | 79° | 41° | 60° | — | — |
| 1987 | 60° | 50° | 55° | 0.13" | — |
| 1986 | 60° | 36° | 48° | — | — |
| 1985 | 65° | 43° | 54° | 0.08" | — |
| 1984 | 65° | 49° | 57° | — | — |
| 1983 | 62° | 49° | 55° | — | — |
| 1982 | 62° | 45° | 53° | — | — |
| 1981 | 79° | 41° | 60° | — | — |
| 1980 | 79° | 46° | 62° | — | — |
| 1979 | 67° | 40° | 53° | — | — |
| 1978 | 75° | 43° | 59° | — | — |
| 1977warmest | 87° | 62° | 75° | 1.17" | — |
| 1976 | 81° | 51° | 66° | — | — |
| 1975 | 84° | 63° | 73° | — | — |
| 1974 | 71° | 48° | 60° | — | — |
| 1973 | 73° | 41° | 57° | — | — |
| 1972 | 90° | 56° | 73° | — | — |
| 1971 | 57° | 43° | 50° | — | — |
55 years of data from GREEN BAY