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Green Bay, WI Weather on April 9
April 9th in Green Bay, WI typically brings chilly spring weather, with average highs around 49°F and lows near 31°F. Over 55 years of records, the warmest April 9th was in 2017 (64°F average), while the coldest was 1989 (22°F) — a 42°F range across recorded history. Precipitation has occurred on 33% of recorded April 9th dates, with snow falling 16% of the time (heaviest snowfall: 4.4"). The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
What to Expect on April 9
Planning for April 9th in Green Bay, WI? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
April 9 Weather Records for Green Bay
- •The all-time record high for April 9th in Green Bay, WI is 74°F, set in 2017.
- •The coldest April 9th on record dropped to 13°F in 2016.
- •A freeze (32°F or below) has occurred on April 9th in 31 of the last 55 years.
- •Last year (1971), April 9th was 8°F warmer than the long-term average.
Frequently Asked Questions
What was the warmest April 9 ever in Green Bay?
The warmest April 9 in Green Bay, WI reached 74°F in 2017. That is 25°F above the long-term average high of 49°F.
What was the coldest April 9 ever in Green Bay?
The coldest April 9 in Green Bay, WI dropped to 13°F in 2016. That is 18°F below the long-term average low of 31°F.
What is the average temperature on April 9 in Green Bay?
On April 9, Green Bay averages a high of 49°F and a low of 31°F based on 55 years of NOAA weather observations from GREEN BAY.
How many years of weather data are available for April 9 in Green Bay?
We have 55 years of weather records for April 9 in Green Bay, WI, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
April 9 Weather History in Green Bay
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 47°F | 32°F | 0" | -- |
| 2024 | 57°F | 38°F | 0" | -- |
| 2023 | 65°F | 29°F | 0" | -- |
| 2022 | 50°F | 31°F | 0" | -- |
| 2021 | 57°F | 47°F | 0.53" | -- |
| 2020 | 45°F | 35°F | 0.1" | 0.2" |
| 2019 | 57°F | 35°F | 0" | -- |
| 2018 | 42°F | 23°F | 0" | -- |
| 2017 | 74°F | 55°F | 0" | -- |
| 2016 | 32°F | 13°F | 0" | -- |
| 2015 | 41°F | 36°F | 1.85" | -- |
| 2014 | 58°F | 31°F | 0" | -- |
| 2013 | 37°F | 32°F | 1.47" | 0.1" |
| 2012 | 54°F | 36°F | 0" | -- |
| 2011 | 52°F | 37°F | 0" | -- |
| 2010 | 53°F | 27°F | 0" | -- |
| 2009 | 52°F | 29°F | 0" | -- |
| 2008 | 45°F | 34°F | 0.76" | 0.5" |
| 2007 | 40°F | 23°F | 0.3" | 1.3" |
| 2006 | 55°F | 30°F | 0" | -- |
| 2005 | 64°F | 35°F | 0" | -- |
| 2004 | 52°F | 33°F | 0.03" | -- |
| 2003 | 48°F | 20°F | 0" | -- |
| 2002 | 51°F | 33°F | 0" | -- |
| 2001 | 41°F | 36°F | 0.28" | -- |
| 2000 | 52°F | 25°F | 0.2" | 0.8" |
| 1999 | 51°F | 37°F | 0.66" | -- |
| 1998 | 53°F | 36°F | 0" | -- |
| 1997 | 37°F | 17°F | 0" | -- |
| 1996 | 50°F | 27°F | 0" | -- |
| 1995 | 38°F | 29°F | 0" | -- |
| 1994 | 52°F | 38°F | 0" | -- |
| 1993 | 50°F | 39°F | 0" | -- |
| 1992 | 58°F | 30°F | 0" | -- |
| 1991 | 38°F | 30°F | 1.42" | 3.7" |
| 1990 | 61°F | 33°F | 0.18" | -- |
| 1989 | 27°F | 17°F | 0.03" | 0.1" |
| 1988 | 65°F | 34°F | 0" | -- |
| 1987 | 74°F | 31°F | 0" | -- |
| 1986 | 54°F | 31°F | 0" | -- |
| 1985 | 37°F | 21°F | 0" | -- |
| 1984 | 58°F | 36°F | 0" | -- |
| 1983 | 37°F | 33°F | 1.68" | -- |
| 1982 | 44°F | 24°F | 0" | -- |
| 1981 | 63°F | 33°F | 0" | -- |
| 1980 | 41°F | 35°F | 0.2" | -- |
| 1979 | 38°F | 27°F | 0.03" | 0.1" |
| 1978 | 38°F | 32°F | 2.06" | -- |
| 1977 | 56°F | 25°F | 0" | -- |
| 1976 | 60°F | 28°F | 0" | -- |
| 1975 | 37°F | 27°F | 0" | -- |
| 1974 | 45°F | 24°F | 0" | -- |
| 1973 | 33°F | 28°F | 0.86" | 4.4" |
| 1972 | 42°F | 24°F | 0" | -- |
| 1971 | 57°F | 35°F | 0" | -- |
Based on 55 years of data from NOAA station: GREEN BAY
Monthly Climate Averages
Historical temperature and precipitation averages for Green Bay, WI, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.