Port Sanilac Michigan Climate Data

Monthly Average Climate Data for Port Sanilac Michigan

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.7 °F29.8 °F2.29 in.
February17.6 °F31.6 °F1.89 in.
March25.4 °F39.7 °F2.06 in.
April35.2 °F50.0 °F3.17 in.
May45.5 °F61.3 °F3.38 in.
June55.8 °F71.5 °F3.26 in.
July62.2 °F77.5 °F3.04 in.
August61.4 °F77.2 °F3.27 in.
September54.8 °F71.6 °F3.2 in.
October43.8 °F59.0 °F3.06 in.
November33.5 °F46.2 °F2.6 in.
December24.5 °F35.5 °F2.33 in.
Annual39.8 °F54.2 °F33.55 in.

Climate Data for Port Sanilac 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 ClassificationDfb - Humid Continental Mild Summer, Wet All Year
2024 plantmaps.com