Portage Wisconsin Climate Data

Monthly Average Climate Data for Portage Wisconsin

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-12.6 °C-2.8 °C35.81 mm
February-11.1 °C-0.3 °C35.05 mm
March-5.1 °C6.3 °C52.83 mm
April1.4 °C13.7 °C101.85 mm
May8.2 °C20.6 °C113.28 mm
June13.9 °C25.9 °C140.21 mm
July16.1 °C27.9 °C107.19 mm
August14.7 °C26.9 °C103.89 mm
September10.2 °C22.8 °C89.92 mm
October3.7 °C15.4 °C73.15 mm
November-2.6 °C7.2 °C53.85 mm
December-8.6 °C0.2 °C43.18 mm
Annual2.4 °C13.7 °C950.21 mm

Climate Data for Portage 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 5a : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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