Portage Michigan Climate Data

Monthly Average Climate Data for Portage Michigan

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.5 °F31.3 °F2.93 in.
February18.5 °F34.3 °F2.15 in.
March26.3 °F45.0 °F2.37 in.
April37.4 °F58.8 °F3.51 in.
May48.9 °F70.0 °F4.25 in.
June58.1 °F79.2 °F4.08 in.
July61.5 °F83.0 °F3.53 in.
August59.8 °F81.1 °F4.14 in.
September52.3 °F74.7 °F3.48 in.
October41.3 °F61.6 °F3.83 in.
November31.9 °F47.9 °F2.93 in.
December23.4 °F36.2 °F2.46 in.
Annual39.7 °F58.6 °F39.66 in.

Climate Data for Portage Michigan

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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