South Yarmouth Massachusetts Climate Data

Monthly Average Climate Data for South Yarmouth Massachusetts

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-3.9 °C3.4 °C113.54 mm
February-3.6 °C3.9 °C93.98 mm
March-0.7 °C6.6 °C118.11 mm
April4 °C11.4 °C113.79 mm
May9.1 °C16.7 °C87.12 mm
June14.2 °C21.7 °C87.12 mm
July18.2 °C25.6 °C72.14 mm
August17.8 °C25.2 °C83.57 mm
September14.6 °C21.9 °C110.74 mm
October9 °C16.3 °C118.36 mm
November3.9 °C11.2 °C102.11 mm
December-0.6 °C6.7 °C136.65 mm
Annual6.8 °C14.2 °C1237.23 mm

Climate Data for South Yarmouth Massachusetts

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7b : -15°C to -12.2°C
Plant Hardiness Zone - 2012Zone 7a : -17.8°C to -15°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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