Green Bay Wisconsin Climate Data

Monthly Average Climate Data for Green Bay Wisconsin

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-12.3 °C-3.6 °C39.37 mm
February-11.6 °C-1.8 °C30.48 mm
March-6.1 °C4.1 °C46.74 mm
April0.2 °C11.4 °C82.3 mm
May6.6 °C18.7 °C95.5 mm
June12.1 °C23.9 °C103.63 mm
July14.8 °C26.6 °C93.22 mm
August14.1 °C25.6 °C86.87 mm
September9.6 °C21.7 °C84.84 mm
October3.4 °C14.2 °C71.37 mm
November-2.5 °C6.3 °C49.28 mm
December-8.4 °C-0.4 °C44.96 mm
Annual1.7 °C12.2 °C828.56 mm

Climate Data for Green Bay Wisconsin

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5b : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year