Weather on May 15
Green Bay, WI
55 Years of Data
Avg High
68°F
Avg Low
45°F
Warmest
1998
72°F avg
Coldest
1997
42°F avg
About This Date
May 15th in Green Bay, WI typically brings mild spring weather, with average highs around 68°F and lows near 45°F. Over 55 years of records, the warmest May 15th was in 1998 (72°F average), while the coldest was 1997 (42°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 40% of May 15th dates historically, with the wettest May 15th recording 2.21" of rain. The last decade has been 5.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.6°F warmer on this date compared to 20-30 years ago.
Planning for May 15th in Green Bay, WI? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 60° | 71° | 0.38" | — |
| 2024 | 67° | 41° | 54° | — | — |
| 2023 | 75° | 35° | 55° | — | — |
| 2022 | 77° | 59° | 68° | — | — |
| 2021 | 67° | 50° | 58° | 0.03" | — |
| 2020 | 76° | 47° | 61° | — | — |
| 2019 | 78° | 53° | 66° | — | — |
| 2018 | 67° | 48° | 57° | 0.08" | — |
| 2017 | 73° | 47° | 60° | 0.74" | — |
| 2016 | 57° | 31° | 44° | — | — |
| 2015 | 69° | 49° | 59° | 0.18" | — |
| 2014 | 52° | 36° | 44° | 0.03" | — |
| 2013 | 76° | 55° | 65° | — | — |
| 2012 | 80° | 47° | 63° | — | — |
| 2011 | 56° | 40° | 48° | — | — |
| 2010 | 66° | 38° | 52° | — | — |
| 2009 | 69° | 42° | 56° | — | — |
| 2008 | 69° | 41° | 55° | — | — |
| 2007 | 68° | 47° | 57° | 1.63" | — |
| 2006 | 58° | 50° | 54° | 0.15" | — |
| 2005 | 53° | 39° | 46° | — | — |
| 2004 | 58° | 36° | 47° | — | — |
| 2003 | 64° | 45° | 54° | — | — |
| 2002 | 72° | 35° | 53° | 0.15" | — |
| 2001 | 81° | 50° | 65° | — | — |
| 2000 | 66° | 33° | 50° | — | — |
| 1999 | 68° | 50° | 59° | — | — |
| 1998warmest | 84° | 59° | 72° | 0.23" | — |
| 1997coldest | 53° | 31° | 42° | 0.1" | — |
| 1996 | 54° | 46° | 50° | — | — |
| 1995 | 76° | 43° | 59° | — | — |
| 1994 | 69° | 46° | 58° | 0.08" | — |
| 1993 | 64° | 36° | 50° | — | — |
| 1992 | 69° | 47° | 58° | — | — |
| 1991 | 87° | 52° | 69° | — | — |
| 1990 | 54° | 48° | 51° | 0.51" | — |
| 1989 | 72° | 45° | 58° | — | — |
| 1988 | 80° | 54° | 67° | 0.03" | — |
| 1987 | 70° | 40° | 55° | — | — |
| 1986 | 67° | 51° | 59° | 0.81" | — |
| 1985 | 69° | 55° | 62° | 0.28" | — |
| 1984 | 61° | 33° | 47° | — | — |
| 1983 | 55° | 34° | 44° | — | — |
| 1982 | 82° | 59° | 71° | 0.64" | — |
| 1981 | 71° | 38° | 54° | — | — |
| 1980 | 62° | 39° | 51° | — | — |
| 1979 | 66° | 38° | 52° | — | — |
| 1978 | 64° | 46° | 55° | 0.05" | — |
| 1977 | 79° | 50° | 64° | 0.38" | — |
| 1976 | 62° | 44° | 53° | 2.21" | — |
| 1975 | 57° | 43° | 50° | — | — |
| 1974 | 57° | 43° | 50° | — | — |
| 1973 | 68° | 32° | 50° | — | — |
| 1972 | 72° | 50° | 61° | 0.46" | — |
| 1971 | 83° | 48° | 65° | 0.03" | — |
55 years of data from GREEN BAY