Portage Wisconsin Climate Data

Monthly Average Climate Data for Portage Wisconsin

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January9.4 °F26.9 °F1.41 in.
February12.1 °F31.4 °F1.38 in.
March22.8 °F43.3 °F2.08 in.
April34.5 °F56.7 °F4.01 in.
May46.8 °F69.1 °F4.46 in.
June57.0 °F78.6 °F5.52 in.
July60.9 °F82.3 °F4.22 in.
August58.5 °F80.5 °F4.09 in.
September50.3 °F73.1 °F3.54 in.
October38.6 °F59.8 °F2.88 in.
November27.4 °F44.9 °F2.12 in.
December16.6 °F32.3 °F1.7 in.
Annual36.2 °F56.6 °F37.41 in.

Climate Data for Portage Wisconsin

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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