Portage Indiana Climate Data

Monthly Average Climate Data for Portage Indiana

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.6 °C0.3 °C61.98 mm
February-6.2 °C2.4 °C54.36 mm
March-1.5 °C8.1 °C58.67 mm
April4 °C14.9 °C91.19 mm
May9.8 °C20.9 °C104.65 mm
June15.3 °C26.2 °C117.86 mm
July18 °C28.3 °C106.17 mm
August17.3 °C27.5 °C102.11 mm
September13.2 °C24.4 °C88.39 mm
October6.8 °C17.6 °C101.09 mm
November1.2 °C9.7 °C72.14 mm
December-4.3 °C3.2 °C57.66 mm
Annual5.5 °C15.3 °C1016.27 mm

Climate Data for Portage Indiana

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -23.3°C to -20.6°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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