South Yarmouth Massachusetts Climate Data

Monthly Average Climate Data for South Yarmouth Massachusetts

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January25.0 °F38.2 °F4.47 in.
February25.6 °F39.0 °F3.7 in.
March30.8 °F43.8 °F4.65 in.
April39.2 °F52.6 °F4.48 in.
May48.4 °F62.1 °F3.43 in.
June57.6 °F71.1 °F3.43 in.
July64.8 °F78.1 °F2.84 in.
August64.1 °F77.3 °F3.29 in.
September58.2 °F71.5 °F4.36 in.
October48.2 °F61.4 °F4.66 in.
November39.1 °F52.2 °F4.02 in.
December31.0 °F44.0 °F5.38 in.
Annual44.3 °F57.6 °F48.71 in.

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 : 5°F to 10°F
Plant Hardiness Zone - 2012Zone 7a : 0°F to 5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year