Weather on April 21
Green Bay, WI
55 Years of Data
About This Date
April 21st in Green Bay, WI typically brings cool spring weather, with average highs around 57°F and lows near 37°F. Over 56 years of records, the warmest April 21st was in 1985 (72°F average), while the coldest was 1986 (34°F) — a 38°F range across recorded history. Precipitation has occurred on 38% of recorded April 21st dates, with snow falling 5% of the time (heaviest snowfall: 3.8"). The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
Planning for April 21st in Green Bay, WI? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 71° | 41° | 56° | — | — |
| 2025 | 50° | 38° | 44° | 0.97" | — |
| 2024 | 59° | 32° | 46° | — | — |
| 2023 | 55° | 36° | 45° | — | — |
| 2022 | 60° | 42° | 51° | 0.03" | — |
| 2021 | 43° | 27° | 35° | 0.15" | 0.5" |
| 2020 | 43° | 30° | 37° | — | — |
| 2019 | 74° | 48° | 61° | — | — |
| 2018 | 52° | 28° | 40° | — | — |
| 2017 | 60° | 39° | 50° | — | — |
| 2016 | 69° | 48° | 59° | 0.58" | — |
| 2015 | 46° | 34° | 40° | 0.03" | — |
| 2014 | 69° | 44° | 57° | 0.05" | — |
| 2013 | 42° | 27° | 35° | 0.03" | — |
| 2012 | 52° | 31° | 41° | — | — |
| 2011 | 47° | 27° | 37° | — | — |
| 2010 | 49° | 35° | 42° | — | — |
| 2009 | 41° | 33° | 37° | 0.56" | 0.2" |
| 2008 | 70° | 42° | 56° | — | — |
| 2007 | 74° | 40° | 57° | — | — |
| 2006 | 64° | 42° | 53° | 0.03" | — |
| 2005 | 57° | 32° | 45° | — | — |
| 2004 | 48° | 39° | 44° | 0.23" | — |
| 2003 | 47° | 37° | 42° | 0.13" | — |
| 2002 | 40° | 32° | 36° | 0.53" | 3.8" |
| 2001 | 77° | 51° | 64° | — | — |
| 2000 | 59° | 31° | 45° | — | — |
| 1999 | 53° | 43° | 48° | 0.05" | — |
| 1998 | 64° | 34° | 49° | — | — |
| 1997 | 53° | 29° | 41° | — | — |
| 1996 | 65° | 40° | 52° | — | — |
| 1995 | 42° | 37° | 40° | 0.2" | — |
| 1994 | 58° | 31° | 44° | — | — |
| 1993 | 57° | 26° | 42° | — | — |
| 1992 | 61° | 41° | 51° | 0.03" | — |
| 1991 | 53° | 32° | 43° | — | — |
| 1990 | 70° | 40° | 55° | — | — |
| 1989 | 58° | 35° | 46° | — | — |
| 1988 | 55° | 22° | 38° | — | — |
| 1987 | 68° | 40° | 54° | 0.61" | — |
| 1986coldest | 43° | 26° | 34° | — | — |
| 1985warmest | 82° | 62° | 72° | — | — |
| 1984 | 48° | 38° | 43° | — | — |
| 1983 | 63° | 32° | 47° | — | — |
| 1982 | 51° | 27° | 39° | — | — |
| 1981 | 50° | 25° | 37° | — | — |
| 1980 | 77° | 47° | 62° | — | — |
| 1979 | 66° | 41° | 54° | — | — |
| 1978 | 51° | 26° | 39° | — | — |
| 1977 | 65° | 45° | 55° | 1.45" | — |
| 1976 | 45° | 41° | 43° | 0.86" | — |
| 1975 | 52° | 27° | 39° | — | — |
| 1974 | 71° | 53° | 62° | 0.03" | — |
| 1973 | 72° | 61° | 66° | 0.1" | — |
| 1972 | 49° | 32° | 40° | 0.91" | — |
| 1971 | 54° | 38° | 46° | — | — |
Green Bay, WI Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Green Bay, WI Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Green Bay, WI Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Green Bay, WI
Green Bay, WI has no months that meet our "pleasant" threshold — every season has tradeoffs.